Hexdump oneliner

php -r 'for(;$r=fread(STDIN,16);)printf("%08x %s $r\n",$i++*16,join(unpack("h*",$r)));'

Found it on hexdump.io

An internal application is distributed as "bunch files without extensions". To figure out what types of files they are I need to hexdump each one, look for the identifiers, and then add the extensions…

Who distributes anything without extensions and why? Also how is a non-programmer expected to figure this out? (tool's audience is mainly EPMs)

i want to find the person who proposed to force mtp in android for file transfers, and bash them in the head with a plush android toy till they're knocked unconscious.

all i want is to make a file transfer between my phone and my computer, and rather than plugging my phone's usb, i find it easier to set up an ftp server over local network. and when that doesn't work, i might as well hexdump the file, and copy it char-by-char manually, than use mtp.

For devJs (I think?), who asked me what I was working on after I said uuuh me is hexdump diver, here is some logs so as to illustrate the boring stuff I'm doing lmao:

; just checking what I'm allocating c:
0000000000000000 : ALO 000000001B0C42B0

; ^taking that allocation and inspecting it
$0000 <: 000000001B0C42B0

00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................

00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................

; it's 128 bytes, so OK, good.
; then I say perform some writes
000000001B0C42B0 : WRT [ 0 .. 56] | 128 ( 56 * 1)
000000001B0C42E8 : WRT [ 56 .. 61] | 128 ( 5 * 1)

; ^look at the buf again to check that I wrote what I
; ^intended to write
$0000 <: 000000001B0C42B0

0000558D F7C480C0 : 00000000 00000000 | .....U..........
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 544F4F52 | ........ROOT....

00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................

; ... do some more writes, and so it keeps going
000000001B0C42ED : WRT [ 61 .. 117] | 128 ( 56 * 1)
000000001B0C4325 : WRT [ 117 .. 119] | 128 ( 2 * 1)

; ^inspect...
$0000 <: 000000001B0C42B0

0000558D F7C480C0 : 00000000 00000000 | .....U..........
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : FFFFC300 544F4F52 | ........ROOT....

FFFFC3FF FFFFFFFF : 000000FF FFFFFFFF | ................
00000000 00000000 : 00000000 00000000 | ................
00000000 00000000 : 00000000 00000000 | ................
00002400 00000000 : 00000000 00000000 | .....$..........

; and here it crashes because I somehow still wrote
; outside of bounds ;> FUUUUUUUUUUUUUUCKKKK
realloc(): invalid next size
Aborted (core dumped)