proc_pid_projid_map(5)

📦

version 6.20 · 10 versions

6.20 · arch rolling, nixpkgs unstable (latest)
6.13 · opensuse-leap 16.0
6.06 · centos-stream 10
6.16 · alpine 3.23
6.18 · alpine 3.24, nixos 26.05
6.19 · arch rolling, ubuntu stonking
6.7 · ubuntu noble
6.13 · alpine 3.22, fedora 43, fedora 44
6.17 · ubuntu resolute
6.9.1 · debian trixie, fedora 43, ubuntu questing

💖 proc_pid_projid_map — like, the project ID mapping file bestie 💖

okay so real talk, this is one of the little file-format pages from section 5 of the Linux manual (yep, proc_pid_projid_map(5), that's her name, that's the section) and she is short. But read her anyway, because she's part of a very iconic family. 🎀

✨ NAME ✨

/proc/pid/projid_map — project ID mappings 🗺️✨

🌸 DESCRIPTION 🌸

`/proc/pid/projid_map`</p> (since Linux 3.7) 🦋

See user_namespaces(7).

ngl bestie, that's the whole description. no cap. this file is out here with main character energy and like three words of lore, and the lore is: go read user_namespaces(7). periodt. 💅

💜 SEE ALSO 💜

proc(5) 👀

and that's the vibe check, you're done!! 🫶 go forth and read your namespace docs like the scholar you are 💖

sign-off time: this lil page came from Linux man-pages 6.20, dated 2026-02-08, and honestly? she ate. 🍓✨

📦 where this page comes from

arch rolling: man-pages 6.20-1 · 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
📜 the page's license: GPL-3.0-or-later
💖 girlified by deepseek-ai/DeepSeek-V4.1-Flash on 2026-11-03: a language model's rewrite of the original, under its terms