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@fanf@mendeddrum.org
2026-03-11 21:42:04

from my link log —
Linux internals: how /proc/self/mem writes to unwritable memory.
offlinemark.com/an-obscure-qui
saved 2026-03-09

Linux Internals: How /proc/self/mem writes to unwritable memory - offlinemark
Introduction An obscure quirk of the /proc/*/mem pseudofile is its “punch through” semantics. Writes performed through this file will succeed even if the destination virtual memory is marked unwritable. In fact, this behavior is intentional and actively used by projects such as the Julia JIT compiler and rr debugger. This behavior raises some questions: Is […]

@theodric@social.linux.pizza
2026-02-21 22:32:40

I have implemented a KDE-Wayland analogue of XKill called...wait for it...wkill. Usage is like you'd expect: you run it, you get a crosshair, you click on the window you want to kill, and it is killed.
Technical implementation is, in essence:
On click, send `zwlr_foreign_toplevel_handle_v1.close()` to the compositor (politely requesting the application to an hero).
Then, resolve the PID from `/proc` by matching `app_id`,, then send **SIGTERM** (or **SIGKILL** if launched…

@puhuri@mastodon.social
2026-03-09 17:21:42

The 'pv' #Linux utility is quite nice as you can track any process read process with the -d option. But what if it is not installed?
p=long_run_prog_name; while pgrep $p >/dev/null; do echo $(date -Isec) $(awk -v s=$(stat -c %s infile) '/pos/{printf "%.3f %%\n", 100*$2/s}' $(eval echo /proc/{$(pgrep -d, $p)}/fdinfo/3) ); sleep 30;done
'infile' is …

Shell code fragment p=long_run_prog_name while pgrep $p >/dev/null do echo $(date -Isec) \ $(awk -v s=$(stat -c %s infile) '/pos/{printf "%.3f %%\n", 100*$2/s}' \ $(eval echo /proc/{$(pgrep -d, $p)}/fdinfo/3) ) sleep 30 done
@theodric@social.linux.pizza
2026-03-20 12:18:05

vncserver won't run unless the system has a framebuffer console `/proc/fb` / DRM driver loader, booted with or without `nomodeset`. I'm sure there's a more elegant solution to plugging in a USB 2.0 DisplayLink device and rebuilding the kernel with `udl` enabled, but it works, so I now no longer care to troubleshoot further.
OK I might care a little.
But not right now.

‪@Richard@worklifepsych.social‬
2026-03-13 12:30:16

I finally stopped #procrastinating (LOL) and completed this blog post... about procrastination:
worklifepsych.com/are-you-proc

@michabbb@social.vivaldi.net
2026-03-05 09:52:30

💻 Supported RAT commands: ping (heartbeat every 60s), info (system recon), cmd, powershell, run (background shell), screenshot, download, upload, stop
🛡️ Shell execution probes disable_functions and picks first available method from: popen, proc_open, exec, shell_exec, system, passthru — resilient against common #PHP hardening
🔄 C2 connection retries every 15 seconds in a persistent l…

@BBC6MusicBot@mastodonapp.uk
2026-03-12 19:10:50

🇺🇦 #NowPlaying on #BBC6Music's #NewMusicFix
Proc Fiskal:
🎵 ADDICTIONZ
#ProcFiskal
procfiskal.bandcamp.com/track/
open.spotify.com/track/7nwWeA2

@BBC6MusicBot@mastodonapp.uk
2026-03-12 13:51:16

🇺🇦 #NowPlaying on #BBC6Music's #CraigCharles
Proc Fiskal:
🎵 uHazsh
#ProcFiskal
procfiskal.bandcamp.com/track/
open.spotify.com/track/3HCRNdI

@BBC6MusicBot@mastodonapp.uk
2026-03-11 19:37:00

🇺🇦 #NowPlaying on #BBC6Music's #NewMusicFix
Proc Fiskal:
🎵 ADDICTIONZ
#ProcFiskal
procfiskal.bandcamp.com/track/
open.spotify.com/track/7nwWeA2

@BBC6MusicBot@mastodonapp.uk
2026-03-09 20:21:07

🇺🇦 #NowPlaying on #BBC6Music's #NewMusicFix
Proc Fiskal:
🎵 ADDICTIONZ
#ProcFiskal
procfiskal.bandcamp.com/track/
open.spotify.com/track/7nwWeA2

@BBC6MusicBot@mastodonapp.uk
2026-01-28 20:35:59

🇺🇦 #NowPlaying on #BBC6Music's #NewMusicFix
Proc Fiskal:
🎵 Addictionz
#ProcFiskal
#newRelease 🆕 single
procfiskal.bandcamp.com/track/
open.spotify.com/track/7nwWeA2