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Search - "clear linux"
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So, since I hear from a lot of people (on here and irl) that Linux has a 'very high learning curve', let me share my experiences with the first time my dad touched Linux (Elementary OS) without me interfering at all! (keep in mind that he is very a-technical)
*le me boots the system* (I already did setup a user account for him and gave him the password).
Dad: *enters password and presses enter*
Me: "Hmm that went faster than expected."
Dad: "Uhm I know how to login son, it's not that hard and pretty obvious".
Me: "Alright, why don't you try to open up the default word documents editor on here! I'll be right back!"
Me: *Goes away and returns after a minute*.
Dad: *already a few test sentences typed in LibreOffice writer* it's going pretty well :)!
Me: "Oo how did you find that?!"
Dad: "Well, there's a thingy that says 'applications' so I clicked in and found it in the "Office" section, do you think I am blind or something?!"
Me: 😐. uhm no but I just didn't think you'd find it that quickly. Now try to install Chromium browser! *thinking: he'll fail this one for sure* I'll be right back :).
Me: *returns again after a minute or so*
Dad: *already searching for stuff through Chromium*
Me: "wait, how the hell did you do that so quickly, it's not the easiest thingy for most people".
Dad: "Jesus, it's not that hard! I went to the application browsing thingy, typed 'software' and then a sorta software store icon showed up so I clicked it and it opened a windows with a search bar saying something like 'search for applications/software'. clicked in it, typed 'chromium', saw it coming up, there was a very clear 'install' button, it asked for my password, I put it in and after a little it gave a notification that it was installed. Then I went to that application browsing thingy again and typed Chromium. Then I hit enter because it selected an icon called chromium...."
Me: O.o. Okay this is going very good, now open an email client and login to your email address!
Dad: *goes to application browsing thingy, types 'email', evolution icon shows up, dad clicks it, email address setup steps show up and dad follows them quickly. After about a minute, everything is setup.
I expected this to be a hard process for someone who dealt with Windows his entire life but damn, I underestimated it.
Asked him if he found it easy/what he liked about it:
"Well, it's very clear where I can find everything, default browser/email/word document editor programs are easy to find and that's about all I need so yeah, great system!"
I am proud of you, dad!77 -
I wanted to post a note on devRant community etiquette and rule-breaking behavior we’ve been seeing lately to make clear it will not be tolerated. This is pretty much a rehash of this rant, https://devrant.com/rants/609739/... and also our official rules which I highly encourage people to read: https://devrant.com/rules
I’ve noticed an influx of a select group of members, mostly older users, expressing a distain towards other users or declaring content they dislike “shouldn’t be posted”, “please stop”, etc. If you find yourself about to post that, as per our rules, please don’t. It blatantly violates our rules and we are going to start cracking down on it much more. Whether you have 30k+ points or 10, we will apply the rules fairly to everyone and not give breaks to specific people, which admittedly I’ve done in the past.
If we see this behavior in rants/comments first we will give a warning (and the rant/comment will be deleted) and the next offense is a ban.
A valid question (even though I’ve answered it before) might be why does this need to be a rule? Simply put, it’s a rule for a number of reasons: posts like described try to inflict one’s will upon the entire community (even though we have a Democrat voting process...), they create confusion (almost every time they try to sound official, ex. “Stop doing this”), and beyond those two main reasons, they literally accomplish nothing because they offer no constructive methods of achieving what’s being requested, and only a fraction of the community will actually see it.
Here’s an example of what’s not allowed and what is allowed:
- Allowed: posting an issue on our GitHub issue tracker saying “I really dislike seeing this type of rant in my algo feed, here’s some ideas I have to improve the algo and add more personalization so I can see what I want.”
- Allowed: posting on GitHub issue tracker: “I found this awesome image similarly algo that I think can improve the ‘repost check feature’ - you guys should check it out and see if it might be good”
- Not allowed: “Omg stop shitposting windows update rants and Linux rants I hate them. Go post this type of rant because that’s what everyone really wants to see.”
One is constructive an the other is merely an opinion expressed as an enforcement of a self-made rule on the community and tries to tell other people how they should use devRant.
I cringe when people tell others how to use devRant because without fail when I see those posts, I go through that person’s rant/comment history and I nearly always see them using devRant in some kind of way I disagree with or isn’t exactly what I like to see. But that’s OK. I understand I’m not going to enjoy everything posted and I’m also not going to agree with everything posted. But I think it’s fair for those same people to then lecture on what isn’t appropriate to post on devRant, and it’s even more silly when their posts are sometimes irrelevant to development and the posts they are complaining about are relevant.
In the end, based on the large majority of feedback we get, we want to make devRant a place where everyone feels comfortable expressing themselves and doesn’t have to think about possibly getting ridiculed every time they post and that don’t have people trying to dictate what kind of ideas they are allowed to post. We also realize there’s types of content people don’t enjoy, but telling others not to post it is not the solution. We will soon be launching post type filters that will make filtering rants by post type possible.
Please let me know if you have any questions and thanks for reading.64 -
My mentor/guider at my last internship.
He was great at guiding, only 1-2 years older than me, brought criticism in a constructive way (only had a very tiny thing once in half a year though) and although they were forced to use windows in a few production environments, when it came to handling very sensitive data and they asked me for an opinion before him and I answered that closed source software wasn't a good idea and they'd all go against me, this guy quit his nice-guy mode and went straight to dead-serious backing me up.
I remember a specific occurrence:
Programmers in room (under him technically): so linuxxx, why not just use windows servers for this data storage?
Me: because it's closed source, you know why I'd say that that's bad for handling sensitive data
Programmers: oh come on not that again...
Me: no but really look at it from my si.....
Programmers: no stop it. You're only an intern, don't act like you know a lot about thi....
Mentor: no you shut the fuck up. We. Are. Not. Using. Proprietary. Bullshit. For. Storing. Sensitive. Data.
Linuxxx seems to know a lot more about security and privacy than you guys so you fucking listen to what he has to say.
Windows is out of the fucking question here, am I clear?
Yeah that felt awesome.
Also that time when a mysql db in prod went bad and they didn't really know what to do. Didn't have much experience but knew how to run a repair.
He called me in and asked me to have a look.
Me: *fixed it in a few minutes* so how many visitors does this thing get, few hundred a day?
Him: few million.
Me: 😵 I'm only an intern! Why did you let me access this?!
Him: because you're the one with the most Linux knowledge here and I trust you to fix it or give a shout when you simply can't.
Lastly he asked me to help out with iptables rules. I wasn't of much help but it was fun to sit there debugging iptables shit with two seniors 😊
He always gave good feedback, knew my qualities and put them to good use and kept my motivation high.
Awesome guy!4 -
Hacking/attack experiences...
I'm, for obvious reasons, only going to talk about the attacks I went through and the *legal* ones I did 😅 😜
Let's first get some things clear/funny facts:
I've been doing offensive security since I was 14-15. Defensive since the age of 16-17. I'm getting close to 23 now, for the record.
First system ever hacked (metasploit exploit): Windows XP.
(To be clear, at home through a pentesting environment, all legal)
Easiest system ever hacked: Windows XP yet again.
Time it took me to crack/hack into today's OS's (remote + local exploits, don't remember which ones I used by the way):
Windows: XP - five seconds (damn, those metasploit exploits are powerful)
Windows Vista: Few minutes.
Windows 7: Few minutes.
Windows 10: Few minutes.
OSX (in general): 1 Hour (finding a good exploit took some time, got to root level easily aftewards. No, I do not remember how/what exactly, it's years and years ago)
Linux (Ubuntu): A month approx. Ended up using a Java applet through Firefox when that was still a thing. Literally had to click it manually xD
Linux: (RHEL based systems): Still not exploited, SELinux is powerful, motherfucker.
Keep in mind that I had a great pentesting setup back then 😊. I don't have nor do that anymore since I love defensive security more nowadays and simply don't have the time anymore.
Dealing with attacks and getting hacked.
Keep in mind that I manage around 20 servers (including vps's and dedi's) so I get the usual amount of ssh brute force attacks (thanks for keeping me safe, CSF!) which is about 40-50K every hour. Those ip's automatically get blocked after three failed attempts within 5 minutes. No root login allowed + rsa key login with freaking strong passwords/passphrases.
linu.xxx/much-security.nl - All kinds of attacks, application attacks, brute force, DDoS sometimes but that is also mostly mitigated at provider level, to name a few. So, except for my own tests and a few ddos's on both those domains, nothing really threatening. (as in, nothing seems to have fucked anything up yet)
How did I discover that two of my servers were hacked through brute forcers while no brute force protection was in place yet? installed a barebones ubuntu server onto both. They only come with system-default applications. Tried installing Nginx next day, port 80 was already in use. I always run 'pidof apache2' to make sure it isn't running and thought I'd run that for fun while I knew I didn't install it and it didn't come with the distro. It was actually running. Checked the auth logs and saw succesful root logins - fuck me - reinstalled the servers and installed Fail2Ban. It bans any ip address which had three failed ssh logins within 5 minutes:
Enabled Fail2Ban -> checked iptables (iptables -L) literally two seconds later: 100+ banned ip addresses - holy fuck, no wonder I got hacked!
One other kind/type of attack I get regularly but if it doesn't get much worse, I'll deal with that :)
Dealing with different kinds of attacks:
Web app attacks: extensively testing everything for security vulns before releasing it into the open.
Network attacks: Nginx rate limiting/CSF rate limiting against SYN DDoS attacks for example.
System attacks: Anti brute force software (Fail2Ban or CSF), anti rootkit software, AppArmor or (which I prefer) SELinux which actually catches quite some web app attacks as well and REGULARLY UPDATING THE SERVERS/SOFTWARE.
So yah, hereby :P39 -
https://git.kernel.org/…/ke…/... sure some of you are working on the patches already, if you are then lets connect cause, I am an ardent researcher for the same as of now.
So here it goes:
As soon as kernel page table isolation(KPTI) bug will be out of embargo, Whatsapp and FB will be flooded with over-night kernel "shikhuritee" experts who will share shitty advices non-stop.
1. The bug under embargo is a side channel attack, which exploits the fact that Intel chips come with speculative execution without proper isolation between user pages and kernel pages. Therefore, with careful scheduling and timing attack will reveal some information from kernel pages, while the code is running in user mode.
In easy terms, if you have a VPS, another person with VPS on same physical server may read memory being used by your VPS, which will result in unwanted data leakage. To make the matter worse, a malicious JS from innocent looking webpage might be (might be, because JS does not provide language constructs for such fine grained control; atleast none that I know as of now) able to read kernel pages, and pawn you real hard, real bad.
2. The bug comes from too much reliance on Tomasulo's algorithm for out-of-order instruction scheduling. It is not yet clear whether the bug can be fixed with a microcode update (and if not, Intel has to fix this in silicon itself). As far as I can dig, there is nothing that hints that this bug is fixable in microcode, which makes the matter much worse. Also according to my understanding a microcode update will be too trivial to fix this kind of a hardware bug.
3. A software-only remedy is possible, and that is being implemented by all major OSs (including our lovely Linux) in kernel space. The patch forces Translation Lookaside Buffer to flush if a context switch happens during a syscall (this is what I understand as of now). The benchmarks are suggesting that slowdown will be somewhere between 5%(best case)-30%(worst case).
4. Regarding point 3, syscalls don't matter much. Only thing that matters is how many times syscalls are called. For example, if you are using read() or write() on 8MB buffers, you won't have too much slowdown; but if you are calling same syscalls once per byte, a heavy performance penalty is guaranteed. All processes are which are I/O heavy are going to suffer (hostings and databases are two common examples).
5. The patch can be disabled in Linux by passing argument to kernel during boot; however it is not advised for pretty much obvious reasons.
6. For gamers: this is not going to affect games (because those are not I/O heavy)
Meltdown: "Meltdown" targeted on desktop chips can read kernel memory from L1D cache, Intel is only affected with this variant. Works on only Intel.
Spectre: Spectre is a hardware vulnerability with implementations of branch prediction that affects modern microprocessors with speculative execution, by allowing malicious processes access to the contents of other programs mapped memory. Works on all chips including Intel/ARM/AMD.
For updates refer the kernel tree: https://git.kernel.org/…/ke…/...
For further details and more chit-chats refer: https://lwn.net/SubscriberLink/...
~Cheers~
(Originally written by Adhokshaj Mishra, edited by me. )23 -
--- Linux wants some hugs, and everyone gives a hug about it! ---
After the CoC controversy revolving around the Linux Kernel project, a change introduced by the CoC is being put into practice:
Jarkko Sakkinen, from Intel, started replacing words comments containing "fuck" with their "hug" variant. This means comments such as
/* master list of VME vectors -- don't fuck with this */
might look a bit different in the future:
/* master list of VME vectors -- don't hug with this */
People that oppose this change criticize that the comments will make much less sense to people that aren't fluent in English yet. They also do not like the redundant censoring - the actual meaning is still implied, just no longer included as clear text. It might also cause misunderstandings to people working with the code.
Those supporting this change, aside from jokingly mentioning that this change will save one character per f-word comment, note that this can give the Linux Kernel project a more positive feeling with anyone who works with the code, with "fuck" mostly associated with bad feelings, while "hug" is indeed mostly going to call positive feelings in our subconscious minds.
Who doesn't like a good hug? :)
What is your opinion on this rather controversial topic? Feel free to let us know in the comments, as we are very interested in your stances and arguments on this!
Sources:
https://lkml.org/lkml/2018/12/1/105
Several comment sections, IRC chats, and other places for people to express their opinions. Too many to list them all.51 -
My first internship was unpaid. "For the experience" and shit. My first task was to clear out an entire office full to the literal ceiling with the phones of people who had been laid off or quit. There were now just three old guys in the entire office. And me. Go figure. I need to find that picture, it's truly unbelievable.
My next task was to sort cables in the store room. Mind you, this was supposed to be a software dev internship.
I consistently had to ASK for work to do. If I didn't, I would just sit in my new office all day doing homework and playing with linux liveCDs and nobody cared.
So the third task they gave me was to try to restore a very old (like XP old) computer that had a broken hard drive, literally broken. Said they wanted to "repurpose it." As busy work I guess.
So I scrounged around the cleptomaniacal cesspool of dated and neglected tech and found a hard drive. Pop it in, chkdsk, fdisk, good to go. Spend hours installing XP while sorting more random cables and doing my homework because honestly writing a history paper is more valuable to my dev career than this complete bullshit. Finally get the thing working and go to report the miracle of rebirth to my higher-up. He says "oh cool," doesn't smile, and hands me a list of software to install.
I come back 20 minutes later - "Hey, most of these require corporate licenses."
Guy says "yup" and goes back to ignoring me. Never gives me a company card to buy licenses, or a list of ones already bought. I've revived the computer equivalent of Moses from the computer equivalent of permadeath just for this asshole to completely disregard that and give me an(other) impossible task, just to get me off his back. Excuse me for imposing with free (then-child) labor, you ass.
I spend maybe another week there doing homework in the office I cleaned and contemplating stealing everything of value. I guarantee they wouldn't have noticed though, which somehow made the idea less appealing.
I quit by texting my boss.
He never replied.
I wish I had stolen their laptop RAM.
It's probably still sitting on boss's shelf collecting dust and being a miserable, outdated fucking waste of space, just like him and his two remaining coworkers.4 -
What I'm posting here is my 'manifesto'/the things I stand for. You may like it, you may hate it, you may comment but this is what I stand for.
What are the basic principles of life? one of them is sharing, so why stop at software/computers?
I think we should share our software, make it better together and don't put restrictions onto it. Everyone should be able to contribute their part and we should make it better together. Of course, we have to make money but I think that there is a very good way in making money through OSS.
Next to that, since the Snowden releases from 2013, it has come clear that the NSA (and other intelligence agencies) will try everything to get into anyone's messages, devices, systems and so on. That's simply NOT okay.
Our devices should be OUR devices. No agency should be allowed to warrantless bypass our systems/messages security/encryptions for the sake of whatever 'national security' bullshit. Even a former NSA semi-director traveled to the UK to oppose mass surveillance/mass govt. hacking because he, himself, said that it doesn't work.
We should be able to communicate freely without spying. Without the feeling that we are being watched. Too badly, the intelligence agencies of today do not want us to do this and this is why mass surveillance/gag orders (companies having to reveal their users' information without being allowed to alert their users about this) are in place but I think that this is absolutely wrong. When we use end to end encrypted communications, we simply defend ourselves against this non-ethical form of spying.
I'm a heavy Signal (and since a few days also Riot.IM (matrix protocol) (Riot.IM with end to end crypto enabled)), Tutanota (encrypted email) and Linux user because I believe that only those measures (open source, reliable crypto) will protect against all the mass spying we face today.
The applications/services I strongly oppose are stuff like WhatsApp (yes, encryted messages but the metadata is readily available and it's closed source), skype, gmail, outlook and so on and on and on.
I think that we should OWN our OWN data, communications, browsing stuffs, operating systems, softwares and so on.
This was my rant.17 -
Ok, some @#$#!!@ at my company set the WordPress cache directory to "/" on a Linux server, some other plugin triggered the cache clear and the Apache user was the owner of almost all the WordPress directories of several MU installations, this all happened on a Friday afternoon.2
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does anyone else feel like
$ cls
is really linux-y, and
$ clear
feels really windows-y?
i feel like they should be swapped9 -
I love how the Keybase Linux client installs itself straight into /keybase. Unix directory structure guidelines? Oh no, those don't apply to us. And after uninstalling the application they don't even remove the directory. Leaving dirt and not even having the courtesy to clean it up. Their engineers sure are one of a kind.
Also, remember that EFAIL case? I received an email from them at the time, stating some stuff that was about as consistent as their respect for Unix directory structure guidelines. Overtyping straight from said email here:
[…] and our filesystem all do not use PGP.
> whatever that means.
The only time you'll ever use PGP encryption in Keybase is when you're sitting there thinking "Oh, I really want to use legacy PGP encryption."
> Legacy encryption.. yeah right. Just as legacy as Vim is, isn't it?
You have PGP as part of your cryptographic identity.
> OH REALLY?! NO SHIT!!! I ACTIVELY USED 3 OS'S AND FAILED ON 2 BECAUSE OF YOUR SHITTY CLIENT, JUST TO UPLOAD MY FUCKING PUBLIC KEY!!!
You'll want to remove your PGP key from your Keybase identity.
> Hmm, yeah you might want to do so. Not because EFAIL or anything, just because Keybase clearly is a total failure on all levels.
Written quickly,
the Keybase team
> Well that's fucking clear. Could've taken some time to think before hitting "Send" though.
Don't get me wrong, I love the initiatives like this with all my heart, and greatly encourage secure messaging that leverages PGP. But when the implementation sucks this much, I start to ask myself questions about whether I should really trust this thing with my private conversations. Luckily I refrained from uploading my private key to their servers, otherwise I would've been really fucked. -
I've found and fixed any kind of "bad bug" I can think of over my career from allowing negative financial transfers to weird platform specific behaviour, here are a few of the more interesting ones that come to mind...
#1 - Most expensive lesson learned
Almost 10 years ago (while learning to code) I wrote a loyalty card system that ended up going national. Fast forward 2 years and by some miracle the system still worked and had services running on 500+ POS servers in large retail stores uploading thousands of transactions each second - due to this increased traffic to stay ahead of any trouble we decided to add a loadbalancer to our backend.
This was simply a matter of re-assigning the IP and would cause 10-15 minutes of downtime (for the first time ever), we made the switch and everything seemed perfect. Too perfect...
After 10 minutes every phone in the office started going beserk - calls where coming in about store servers irreparably crashing all over the country taking all the tills offline and forcing them to close doors midday. It was bad and we couldn't conceive how it could possibly be us or our software to blame.
Turns out we made the local service write any web service errors to a log file upon failure for debugging purposes before retrying - a perfectly sensible thing to do if I hadn't forgotten to check the size of or clear the log file. In about 15 minutes of downtime each stores error log proceeded to grow and consume every available byte of HD space before crashing windows.
#2 - Hardest to find
This was a true "Nessie" bug.. We had a single codebase powering a few hundred sites. Every now and then at some point the web server would spontaneously die and vommit a bunch of sql statements and sensitive data back to the user causing huge concern but I could never remotely replicate the behaviour - until 4 years later it happened to one of our support staff and I could pull out their network & session info.
Turns out years back when the server was first setup each domain was added as an individual "Site" on IIS but shared the same root directory and hence the same session path. It would have remained unnoticed if we had not grown but as our traffic increased ever so often 2 users of different sites would end up sharing a session id causing the server to promptly implode on itself.
#3 - Most elegant fix
Same bastard IIS server as #2. Codebase was the most unsecure unstable travesty I've ever worked with - sql injection vuns in EVERY URL, sql statements stored in COOKIES... this thing was irreparably fucked up but had to stay online until it could be replaced. Basically every other day it got hit by bots ended up sending bluepill spam or mining shitcoin and I would simply delete the instance and recreate it in a semi un-compromised state which was an acceptable solution for the business for uptime... until we we're DDOS'ed for 5 days straight.
My hands were tied and there was no way to mitigate it except for stopping individual sites as they came under attack and starting them after it subsided... (for some reason they seemed to be targeting by domain instead of ip). After 3 days of doing this manually I was given the go ahead to use any resources necessary to make it stop and especially since it was IIS6 I had no fucking clue where to start.
So I stuck to what I knew and deployed a $5 vm running an Nginx reverse proxy with heavy caching and rate limiting linked to a custom fail2ban plugin in in front of the insecure server. The attacks died instantly, the server sped up 10x and was never compromised by bots again (presumably since they got back a linux user agent). To this day I marvel at this miracle $5 fix.1 -
For being a community based around developers, the amount of people managing to fuck up Windows and then blaming the OS while both my 9 year old brother and the old next door lady keeps theirs running perfectly fine will always be a mystery to me. If you are a developer stop making excuses of how a operating system works and get clever enough to work with it instead of against it. I've been using and developing on Windows for the past 7 years and to be frank rarely do I ever encounter the shit some people post here, mind boggling I would even say pebcak. And just to be clear, I'm not a fanatic, Linux is a beautiful OS.
There I had to get that off my chest, have a nice day.10 -
devRantron v1.2.1
A lot of people have asked me in comments if it is available in windows, macOS or linux. Just to clear this up that it's available on all platform including all linux distros.
Changelists:
1. Clicking on in-app notifications will now scroll to the relevant comment
2. You can scroll outside the column now. Your mouse cursor doesn't need to inside to scroll through the feed
3. Clicking ESC will close any open modal
4. Use arrow keys to scroll feeds
5. User can't subscribe himself anymore
6. You can press enter to log in
Get it from here: https://devrantron.firebaseapp.com
**I posted this yesterday night but removed it immedietly as I detected a huge bug in the release. Sorry 😞11 -
Long rant ahead.. 5k characters pretty much completely used. So feel free to have another cup of coffee and have a seat 🙂
So.. a while back this flash drive was stolen from me, right. Well it turns out that other than me, the other guy in that incident also got to the police 😃
Now, let me explain the smiley face. At the time of the incident I was completely at fault. I had no real reason to throw a punch at this guy and my only "excuse" would be that I was drunk as fuck - I've never drank so much as I did that day. Needless to say, not a very good excuse and I don't treat it as such.
But that guy and whoever else it was that he was with, that was the guy (or at least part of the group that did) that stole that flash drive from me.
Context: https://devrant.com/rants/2049733 and https://devrant.com/rants/2088970
So that's great! I thought that I'd lost this flash drive and most importantly the data on it forever. But just this Friday evening as I was meeting with my friend to buy some illicit electronics (high voltage, low frequency arc generators if you catch my drift), a policeman came along and told me about that other guy filing a report as well, with apparently much of the blame now lying on his side due to him having punched me right into the hospital.
So I told the cop, well most of the blame is on me really, I shouldn't have started that fight to begin with, and for that matter not have drunk that much, yada yada yada.. anyway he walked away (good grief, as I was having that friend on visit to purchase those electronics at that exact time!) and he said that this case could just be classified then. Maybe just come along next week to the police office to file a proper explanation but maybe even that won't be needed.
So yeah, great. But for me there's more in it of course - that other guy knows more about that flash drive and the data on it that I care about. So I figured, let's go to the police office and arrange an appointment with this guy. And I got thinking about the technicalities for if I see that drive back and want to recover its data.
So I've got 2 phones, 1 rooted but reliant on the other one that's unrooted for a data connection to my home (because Android Q, and no bootable TWRP available for it yet). And theoretically a laptop that I can put Arch on it no problem but its display backlight is cooked. So if I want to bring that one I'd have to rely on a display from them. Good luck getting that done. No option. And then there's a flash drive that I can bake up with a portable Arch install that I can sideload from one of their machines but on that.. even more so - good luck getting that done. So my phones are my only option.
Just to be clear, the technical challenge is to read that flash drive and get as much data off of it as possible. The drive is 32GB large and has about 16GB used. So I'll need at least that much on whatever I decide to store a copy on, assuming unchanged contents (unlikely). My Nexus 6P with a VPN profile to connect to my home network has 32GB of storage. So theoretically I could use dd and pipe it to gzip to compress the zeroes. That'd give me a resulting file that's close to the actual usage on the flash drive in size. But just in case.. my OnePlus 6T has 256GB of storage but it's got no root access.. so I don't have block access to an attached flash drive from it. Worst case I'd have to open a WiFi hotspot to it and get an sshd going for the Nexus to connect to.
And there we have it! A large storage device, no root access, that nonetheless can make use of something else that doesn't have the storage but satisfies the other requirements.
And then we have things like parted to read out the partition table (and if unchanged, cryptsetup to read out LUKS). Now, I don't know if Termux has these and frankly I don't care. What I need for that is a chroot. But I can't just install Arch x86_64 on a flash drive and plug it into my phone. Linux Deploy to the rescue! 😁
It can make chrooted installations of common distributions on arm64, and it comes extremely close to actual Linux. With some Linux magic I could make that able to read the block device from Android and do all the required sorcery with it. Just a USB-C to 3x USB-A hub required (which I have), with the target flash drive and one to store my chroot on, connected to my Nexus. And fixed!
Let's see if I can get that flash drive back!
P.S.: if you're into electronics and worried about getting stuff like this stolen, customize it. I happen to know one particular property of that flash drive that I can use for verification, although it wasn't explicitly customized. But for instance in that flash drive there was a decorative LED. Those are current limited by a resistor. Factory default can be say 200 ohm - replace it with one with a higher value. That way you can without any doubt verify it to be yours. Along with other extra security additions, this is one of the things I'll be adding to my "keychain v2".11 -
*gets annoyed by how vi command in Ubuntu WSL points to vim*
To be clear, that's due to update-alternatives in Ubuntu, not WSL specifically.
*le me ducking how to install vi instead, because vim in WSL has scrolling issues*
"install vi ubuntu"
> How do I install and get started with vim/vi? - Ask Ubuntu
> apt - Vim installation in Ubuntu 14.04 - Ask Ubuntu
> Ubuntu Linux: Install vim Text Editor - nixCraft
-.- I'm not looking for vim ffs, I already have that installed.
"install vi ubuntu -vim"
> Same fucking results
"!g install vi ubuntu -vim"
> Installing the VI Perl Toolkit from Source Code—Linux - VMware
> FedoraDirectoryServerClientHowto - Community Help Wiki - Ubuntu …
> Learn How To Use Linux vi Editor And Its Commands - LinOxide
Oh for fuck's sake!!!
So here's my question because apparently search engines clearly can't point me to it, and Ubuntu doesn't seem to have vi as "vi" in their repositories either. Do our Canonical overlords allow people to actually make /usr/bin/vi actually be fucking vi?11 -
Today’s lesson in C programming:
DON’T use
system( “clear” );
in Mac OS...
Causes seg Fault in ur program when it is perfectly correct...
What happened was... a friend wanted help with C programming and had written this code... but it was getting seg Fault randomly... just random seg Fault when his code was correct...
I pinpointed the seg Fault to a printf statement but the statement was correct...
Off to search the issue I went, found out that flushing problems can occur in printf if u don’t use \n.
This happens randomly. Thought this might b the reason...
Went to a VM running Arch Linux and tested the code there... worked perfectly. No issues whatsoever.
From a distant memory I remembered some people discussing to never use system( “clear” ); since it causes issues.
Thought to remove that line from code, thinking it wouldn’t make any difference.
Well imagine my shock when the code worked fine after remove that freaking line...
M gonna blame this one on Mac OS since arch had no issues with it 😡😡
Now to find alternative to system( “clear” );
Damm it I spent 4-5 hours on this crap!!!!!!9 -
!dev
Guys, we need talk raw performance for a second.
Fair disclaimer - if you are for some reason intel worker, you may feel offended.
I have one fucking question.
What's the point of fucking ultra-low-power-extreme-potato CPUs like intel atoms?
Okay, okay. Power usage. Sure. So that's one.
Now tell me, why in the fucking world anyone would prefer to wait 5-10 times more for same action to happen while indeed consuming also 5-10 times less power?
Can't you just tune down "big" core and call it a day? It would be around.. a fuckton faster. I have my i7-7820HK cpu and if I dial it back to 1.2Ghz my WINDOWS with around lot of background tasks machine works fucking faster than atom-powered freaking LUBUNTU that has only firefox open.
tested i7-7820hk vs atom-x5-z8350.
opening new tab and navigating to google took on my i7 machine a under 1 second, and atom took almost 1.5 second. While having higher clock (turbo boost)
Guys, 7820hk dialled down to 1.2 ghz; 0.81v
Seriously.
I felt everything was lagging. but OS was much more responsive than atom machine...
What the fuck, Intel. It's pointless. I think I'm not only one who would gladly pay a little bit more for such difference.
i7 had clear disadvantages here, linux vs windows, clear background vs quite a few processes in background, and it had higher f***ng clock speed.
TL;DR
Intel atom processors use less power but waste a lot of time, while a little bit more power used on bigger cpu would complete task faster, thus atoms are just plain pointless garbage.
PS.
Tested in frustration at work, apparently they bought 3 craptops for presentations or some shit like that and they have mental problems becouse cheapest shit on market is more shitty than they anticipated ;-;
fucking seriously ;-;16 -
Proxmox team, go fuck yourselves.
Now I'm sure that I'll receive a lot of flack for this, but hear me out.
I've tried Proxmox and was quite pleased with its web UI. But I hate how much it locks me into their own little ecosystem.
I want to use btrfs on my drives. Why is this impossible, yet the hack that is ZoL is your obvious alternative? An alternative wherein I can't even compile and run my own kernel, because then ZoL suddenly fails? And don't you tell me to compile your stock config, when it's well over 15GB large in your source tree.
Proxmox is literally the MacOS of Linux distributions. Which was even more so made clear by me being called an idiot by possibly wanting to run Same on the PVE host. Because why on Earth would sysadmins want to?! Why on Earth would sysadmins be competent for wanting to?!!
You know what? I'll just convert those Proxmox servers to Arch and say fuck you to all the bells and whistles that's Proxmox' web UI. Because at least Arch allows me to make my own fucking choices, limited only by what's supported by the Linux operating system.
Perhaps Proxmox will consider btrfs stable in 2021. Because you know, despite it being stable today in 2018, Debian and Proxmox alike live 3 years in the past, i.e. 2015. I hate the Debian ecosystem because of that, but boy do I hate Proxmox even more so. Bloody fucking piece of shit it is!!! 😡6 -
So like a couple days ago I was trying to clear the Var directory of my Symfony project.
I wrote
cd /var
rm ./* -R
Linux: are you sure you want to delete write protected blah blah blah?
Me:AHA! SO ITS A PERMISSIONS ISSUE
sudo rm ./* -R
Quickly realized I was no longer in my project directory.
Took a fat L. Had to reinstall.2 -
OMG. This weekend, there is Rainbow Six Siege free to play on Steam. I have a desktop PC, but I can't get it to work. Tried Ubi support, but they give shit. So...I was hoping, I could finally try this crap game on my laptop. And here we go...
Normally, I use Linux. Only Linux, because Windows 10 on my laptop is extremely fucking painful. I knew it's going to be torture to install that game on it, but whatever.
OK, firstly, I was surprised, that Windows booted in just about 1 minute. I was like wtf just happened. Everything seemed to be fine and working. I downloaded uPlay, installed it and tried to install the game. Just to be clear, this rant is written from Linux again. And why?
Because FUCKING WINBLOWS desides to FUCKING UPDATE WIFI DRIVERS. 1 minute - internet works, second fucking minute - WIFI IS FUCKING DOWN. Thanks fucking pussy Gates. I really like you. And use this crap daily. Holy shit I would die...2 -
I fucked up. I used the shebang line #!/usr/bin/env python3 in a script that was being ran every 5 minutes with a cron job. This generated an email to a system that dropped a file for processing and sent an age email for each file every minute. Because the Linux OS generated emails didn’t contain a keyword the script closed by design but I forgot to uncomment the delete temp file line. This started on Wednesday before a 4 day weekend. By the time I got in on Monday I was 40GB over my email quota and receiving 2500 emails a minute. I fixed the script and stopped the emails but down I have to clear out those emails. Here it is Wednesday and I am deleting 1 MB every 3 seconds. This is painful.1
-
FUCKING PIECE OF SHIT USB STICK. What the actual fuck how hard can it be to format a usb-stick? Excuse me?
Basically, flashed arch .iso on my usb stick. After stuff was done I want to format my usb stick again so I can put files on it. Normally thats a super easy process. I tried a shitload of things.
1) On windows: Quick format -> Windows was unable to format.
2) Went to Linux. Opened GParted. Gparted didn't detect the usb drive? Wtf. Rebooted then it showed up. Tried to delete all partitions, tried to clear the entire drive. Gparted just freezes. Ok... wtf is going on?
3) Tried to go the bruteforce way and zero out the entire drive with dd. After a few seconds dd freezes and is not doing anything anymore.
Wth is going on lol? Why can I not wipe my usb drive? Any ideas?10 -
Former android fan, I’ve been using iPhone SE for a while, and now I’m ready to give feedback. We are talking about brand new, iOS 11.2.2 device, never jailbraked (jailbroken?) or made anything fucked up to.
The main problem is battery life. It’s poor. I mean, my cheap ass Meizu m3s stands for about three times longer. Now I always need to carry power bank or charger around, keeping it up from one outlet to another.
iOS 11 is unstable and flawed. Music widget on lock screen freezes randomly, ui falls apart sometimes, apps sometimes start in landscape mode. I never found android ui falling apart, just like webpage marked up by interns.
Transferring files to Linux PC is huge pain in the ass. Nuff said.
Aaaand... that’s all. There is literally only three problems present.
On the other hand, there is huge advantages over android:
Speed. It’s unbeatable. It’s absolutely stunning. Need camera? Here it is, quarter second away. Android camera needed straight 15 seconds to start up. Taking picture? Here it is, flawless as always. Zero motion blur, gamma is ideal, focus is so sharp so you may hurt your eyes. Need 100 pictures? Here you go, just press the button and hold it. Maybe s9 or another shiny ass android takes pictures as fast as iPhone, but I bet my iPhone will be taking pictures same flawlessly after 5 years, while your android will probably become sluggish ass piece of crap.
Not. A. Single. Fucking. Lag.
Asphalt 8? 60 FPS all the way down. 2GIS? Fraction of a second away. That’s it, that’s how it have to be.
Sound quality. Just as neat as my Sansa Clip. EarPods are crap, so I’m using my SE215. Not going to ever come back to Sansa. Xperia TX had much less quality audio btw.
Apps. As long as the whole enterprise world sucking Apple’s dick, apps are running silky smooth and the things are not going to change. Come on. Apple is the king nowadays, admit it or not.
Keyboard is amazing. Screen is amazing. It’s just that pleasing. The sounds iPhone makes are great, while android sounds piss me off and making me hold myself from throwing the phone straight to the wall.
iPhone makes me feel cared about. Everything is on it’s place, everything fits perfectly. You are watching YouTube, you need to adjust volume and volume bar appears as tiny strip on the very top, just to not distract you. Make screenshot, draw something on it, share and hit delete. Every action you need is one tap away. Look up word? One tap away. Position the cursor between words? Polished as fuck, here you go, have your handy magnifying glass. Adblock in safari? Install it from the App Store and it will be literally two taps away, right at the settings. No VPN needed. Safari doesn’t become slow with Adblock, it’s just the same amazingly fast browser, but without ads. And Apple Music is just one dollar a month for students, filled with high quality songs.
Even google apps working better on iOS.
The advantages are clear for me, while downsides aren’t significant. @irene, you wanted to know what I’ll tell after a while, so I’m saying it proudly:
I’m never ever coming back to android.12 -
So I salvaged some computer that was about to be thrown out by IT because it works perfectly fine and would be a waste to lose.
The (current) problem is, there is no built-in wi-fi adapter so I had to order a usb adapter to plug into the machine.
Fortunately enough it supports Linux but cones with a cd with the _source_ of the driver in it and we are supposed to build it. Now what's the problem with that?
First problem: building needs all sorts of build tools, starting from gcc and make. Since it's a fresh install, though, I _cannot_ install those normally because -- you guessed it -- I don't have a WiFi connection, which is why I needed the bloody adapter in the first place, so I spent hours trying to fetch the binaries from the apt register using another computer and bringing them over via USB.
Once that was (more or less) successful, the next problem came around; Second problem: the instructions clearly state to run make, but there is no fucking makefile anywhere so that obviously fails spectacularly. What _is_ there are some bash scripts so I try running those.
Now, just when I think it's finally done (one of the scripts has been running for a while and seems to work) the compiler dies with an error: the fucking driver won't build for the current kernel version. And not just that, but it is clear nobody is using basic things like include guards because gcc kept screaming at me about the same macros being defined over and over due to header file re-inclusion. Like, seriously? Come on!
Long story short the fucking adapter is going back to the seller, let's see if the next one I order more civilized.8 -
I'm founding a company on machine learning with two others where one of them is an economics guy who decided his work was boring so he did his PhD in Engineering.
He started about three months ago to also invest some time in computer and dev stuff.
As a free software and Linux guy I wanted to get clear about stuff like open sour...
Economics guy: "We should definitely make all of that stuff open source to give back to the community."
Me: I love you. I truely do.
The same thing happened with security, svn etc.
I mean... Well... So unexpected! o.O2 -
I think I finally, really, comprehend why secret societies have historically been created... I mean the potentially logical ones. This train of thought is logically terrifying.
I want a logic check.
I've been jokingly mentioning some of my totally true, practically useless in most scenarios, skills/specific fields of knowledge/ability under a moniker of 'extremely useful, assuming apocalyptic event' for years. Things like advanced knowledge of Coefficients of glass expansion, Fortran, various things that have caused friends to refer to me as MacGyver after the reboot came out.
In recent years, I've personally encountered several varieties of the ones defined by helplessness, self-victimisation, some version of a real disability... that theyve expounded into a personified personal nemesis-- to flashily battle yet never overcome, etc... the vast majority perplexing me as to why that's a valid form of life to them... it's not that they never consider some other way; the ball is just quickly dropped and never picked back up.
College?(not that I'm a big fan) they wish they could but so expensive... aide? The form was hard/confusing/past-due...
Lookup/learn something more indepth than a tiktok? *some self-deprecating bs*
Yet it's "I always wanted to do/be/learn X"
Shows like 'How It's Made' fascinate, but don't inspire enough for a 5min google query.
In the dev world its a clear, inverted pyramid-- one of the first posts I saw when I rejoined here was ostream's rant on Apple sucking because after they stop support/updates you "can't" load a different OS... ofc you can. But several comments down... no mention of that... i think it was @LensFlare who was the only one in ~15 respondents to point out the core logical fallacy.
Basic shit is totally forgotten... try asking some random adults what plastic is made from... or pay attention to how many people declare they have a gluten "allergy".
I get people frequently telling me that things im pointing out as differences don't matter because "it's just semantics"... semantics is literally the epitome of "significance", with roots in 'meaning' and 'truth'
Back to the main issue... We are in a world where DIY is typically something you pay more to do as a catered experience than actually learning anything, people destroy their own arguments hopes of validity unwittingly often by stating the arguement, get 'offended' or 'triggered' by factual statements, propagate misinformation and bastardise words until MW needs money enough to print a new version, likely adding the misuse as an actual definition and basic knowledge and the thought to actually learn is vetoed by the existence of google translate, the wisdom of tiktok and the pure brillance of troubleshooting every random linux issue you have from not knowing basic CLI and thinking linux makes you cool, with chmod 777 because so many other dumbasses on forums keep propagating misinformation. Ask them what 777 means, most have no clue... as they didnt consider googling that one before putting it in a terminal several times.
The number of humans that actually know the basic shit that the infrastructure of the world is built on keeps decreasing... and we aren't even keeping a running tally.
The structure of the internet has the right idea... dns- 13 active master root servers, with multiple redundancies if they start dropping... hell ICANN is like a secret society but publicly known/obfuscated... the modern internet hasnt had a global meltdown... aside from the lack of censorship and global availability changing the social definition of a valid use of braincells to essentially propagating spam as if it's factual and educational.
So many 'devs' so few understanding what a driver is, much less how to write one... irl network techs that don't know what dhcp is or that their equiptment has logs... professionals in deducated fields like Autism research/coping... no clue why it was called "autism", obesity and malnutrition simultaneously existing in the same humans... it's like we need to prepare a subterranean life-supporting vault and stock it like Noah's ark... just including the basic knowledge of things that used to be common/obvious. I've literally had 2 different, early 20s, female, certified medical assistants taking my medical history legitimately ask if not having a uterus made it harder to get pregnant...i wish i was joking.
Any ideas better than a subterranean human vault system? It's not like we can simply store detailed explanations, guides, media... unless we find a way to make them into obfuscated tiktok videos apparently on nonsense or makeup tutorials.11 -
I try map my Capslock key to ctrl key while using vim and I search for this on stackoverflow and I found
```Linux? With X, use xmodmap to alter the key mapping, e.g.
xmodmap -e 'clear Lock' -e 'keycode 0x42 = Escape'
Will map Esc to the CapsLock key. Google for more examples.```
following command it will map Esc key to CapsLock key but when I run this command my CapsLock key did stop working and nor my esc key map to CapsLock key. How do I get back my Capslock key default working state, I mean I don't want to map Capslock key to ctrl key?7 -
How can a novel emerging challenger software (written in Rust) take me 4 hours to install (still ongoing)?
Today I have decided to give Pijul a go. Pijul describes itself as a theory-sound alternative to Git, which I have wanted to get away from for a while now, due to various reasons -- many of which I saw Pijul advertise to have solved on design level.
So I set away a day to learn Pijul, today. Well, 4 hours after I sat down -- after a number of hilariously wonky failures of "Rust ecosystem" to do the right thing as I had to install Rust with some shell one-liners those insane wizards recommend for installation process (all in the name of "stability but not stagnation") -- Pijul has now been installing with the blasted `cargo` for an hour now (that's after 3 hours of getting to the point where `cargo install pijul` stopped exploding in my face) -- telling me I only have 40 crates more to install. Are they throttling me, perhaps? I don't care -- I should have been installing Pijul from a repository in accordance with my Linux distribution, or -- at worst -- download a BLOODY COMPILED PROGRAM IMAGE.
What is it with the hipster developers today? Everything they get of tools, they subsume and churn out intricate complexities the likes of which we hadn't seen yesterday. Tell me fellow developers who think installation of your software has to require three and a half novel "installation solutions" to which I can't be arsed to be made privy -- do you think your life today is easier than, I don't know -- wrangling with a Makefile and a C compiler (which today thankfully can do rather good job of standards compliance)?
I mean I wouldn't mind Pijul being written in Rust -- but it turns out Rust's advertised elegancy in practice is wrapped in so much "giftwrap" I feel like what desire I had to learn Rust myself, I'll stear well clear.
Here's an advice for developers in general -- an advice continiously ignored for decades -- stop blowing your original scope of delivery in auxilary packages you think you need to reinvent just because you can or because your mom is out of town! For programming languages like Rust this most certainly entails NOT writing your own package manager, with its own package delivery mechanism that has its own configuration file format and virtual machine to configure dependency resolution or what have you!
You wanted to write a programming language that has novel features you think we need? Fine -- write one and stop there. Watch it grow, and watch people who are busy working on other parts (scopes) of software to integrate your offer.
What a shitshow. Stop smuggling alternative package managers, installers, and discombulators with your actual product -- I only want the latter, I don't want the rest of your damn piping, walls, roof and a cathedral on top of it!
Don't be that guy starting with a pin, and ending up with a fucking diorama miniature of a pig farm in Netherlands. Jesus.7