proc_kmsg(5)

๐Ÿ’– proc_kmsg(5) ๐Ÿ’–

okay bestie, so this one lives in the File Formats Manual section (that's section 5, iykyk) and it's all about one lil file that's basically the kernel's group chat ๐Ÿ“ฑโœจ


๐ŸŒธ NAME ๐ŸŒธ

/proc/kmsg โ€” kernel messages ๐Ÿ’Œ


๐Ÿฆ‹ DESCRIPTION ๐Ÿฆ‹

/proc/kmsg ๐Ÿ’…

okay so picture this: this file is literally the kernel's message drop ๐Ÿ“ฌ You can read it instead of using the syslog(2) system call to read kernel messages. Same tea, different cup, periodt โ˜•โœจ

wait, hold on, bestie, read this part twice ๐Ÿ›‘ A process must have superuser privileges to read this file. No root, no read, no exceptions, no cap ๐Ÿšซ๐Ÿ‘‘

and like, also โ€” only one process should read this file ๐Ÿซถ It's giving "one bestie at a time on aux", fr fr. One reader, that's the vibe ๐Ÿ’…

and the BIG one, the one that actually matters: this file should NOT be read if a syslog process is running which uses the syslog(2) system call facility to log kernel messages ๐Ÿ˜ญ๐Ÿšซ Like, do not do it. Two people reading the same messages is gonna be messy, and not in a cute way. It's giving chaos energy and not the fun kind ๐Ÿ’€

โœจ also relevant: the information in this file is retrieved with the dmesg(1) program ๐Ÿ‘‘

tl;dr vibe check: root only, one reader only, and back off if syslog is already holding the aux cord ๐ŸŽ€

๐Ÿ”ฅ SEE ALSO ๐Ÿ”ฅ

  • proc(5) โ€” the mothership, go read her next, she ate ๐Ÿ’–

and that's the whole page, bestie, you're literally a kernel-message-reading main character now ๐Ÿ‘‘๐ŸŒˆ

little sign-off for the girlies keeping receipts: this one's from the Linux man-pages era, version 6.20 ๐Ÿ’… dated 2026-02-08, and it's pure iconic behavior, no notes ๐ŸŽ€โœจ๐Ÿฆ‹

๐Ÿ“ฆ where this page comes from
  • arch rolling: man-pages 6.20-1 ยท BSD-2-Clause AND BSD-3-Clause AND BSD-4.3TAHOE AND BSD-4-Clause-UC AND GPL-1.0-or-later AND GPL-2.0-only AND GPL-2.0-or-later AND GPL-3.0-or-later AND LGPL-3.0-linking-exception AND LGPL-3.0-or-later AND LicenseRef-Public-Domain AND LicenseRef-UltraPermissive AND Linux-man-pages-1-para AND Linux-man-pages-copyleft AND Linux-man-pages-copyleft-2-para AND Linux-man-pages-copyleft-var AND MIT AND Spencer-94
  • nixpkgs unstable: man-pages 6.20
  • ๐Ÿ“œ the page's license: GPL-3.0-or-later
  • ๐Ÿ’– girlified by deepseek-ai/DeepSeek-V4.1-Flash on : a language model's rewrite of the original, under its terms