Just wanted to do some scripted image resizing for school in school because the teacher asked me to help her with that.
So I thought: Let's just write a tiny script. Written the script in almost no time (just iterates over all jpg's and resizes them)

30sec.

Now I tried to run it. Didn't have my laptop so I had to somehow run it on their windows PCs. At least it's windows 10, unlike other schools that still run XP and stuff so I thought it might be doable. Well guess what, nope it wasn't.

First tried to install imagemagick, that didn't work as only teacher accounts have admin and the teacher was already pretty scarred once he saw me doing stuff in powershell so I thought I'd better not ask to do this via a teacher account and mess with stuff as admin.

Next method: Installing msys2. That worked at least (after taking forever to install and having to mess with the av software to get it to run).
And there comes the next problem: pacman doesn't connect via the proxy so I can't download any packages. There is free wifi but only for teachers, and students aren't going to get access until the school finally has a faster connection because they'd (understandably) cause this connection to be constantly overloaded. I just happen to have access to this wifi network, too, because at least the guys from the IT dept know how bad using proxies under linux is. So I connect via wifi and it works. At least I thought: After running the script it yields weird errors about unsupported arguments even though the command is exactly the same I have been using for years (already checked typos twice)

Then got the idea of simply installing imagemagick on termux on android and transferring the files onto my phone.
Too bad we aren't allowed to attach our own USBs to the pcs. Luckily I got a rooted phone so I simply activate adb over network and connect to it.
After downloading the platform-tools I can't run them because of AV software. Luckily there is an option to add an exception per executable so I do that. After doing that it works.... nope it doesn't. The wifi only allows 443/tcp and 80/tcp, even for internal network devices.

So that's it. I'm simply going to upload that stuff to my nextcloud and convert it at home.

Windows, I hate you!!!