FIREMON(1)

📦
version 0.9.82.2 · 10 versions
, in arch rolling

💖 FIREMON(1) — the firemon man page, but make it group chat 💖

okay so bestie, welcome to firemon — the little monitoring bestie from the firemon man page (yes that's the manual name, we're fancy here ✨). she's literally the girl who watches all your sandboxed processes so you don't have to. grab a 🍓 and let's go.

✨ NAME ✨

Firemon — a monitoring program for processes started in a Firejail sandbox. it's giving surveillance but make it wholesome 💅

🦋 SYNOPSIS 🦋

firemon [OPTIONS] [PID]

🌸 DESCRIPTION 🌸

So Firemon monitors programs started in a Firejail sandbox. no cap, that's the whole vibe.

If you don't specify a PID, then all processes started by Firejail get monitored — every single one, she's nosy like that 🙈. Descendants of these processes are also being monitored (the whole family tree, we love a dynasty 👑).

⚠️ heads up bestie: on Grsecurity systems only the root user can run this program. sorry 💀

💅 OPTIONS 💅

  • --apparmor — prints the AppArmor confinement status for each sandbox. security check, slay 🛡️
  • --arp — prints the ARP table for each sandbox.
  • --caps — prints the capabilities configuration for each sandbox. what can she do? find out ✨
  • --cpu — prints the CPU affinity for each sandbox.
  • --debug — prints debug messages. for when you're in your detective era 🔍
  • -?, --help — prints options and exits. (yes the original says "end exit", we're keeping the chaos, it's iconic 😭)
  • --list — lists all sandboxes. the full roster, main character energy 👑
  • *--name=name* — prints information only about the named sandbox. just the one, we're being selective 🎀
  • --netstats — monitors network statistics for sandboxes creating a new network namespace. numbers go brrr 🌐
  • --route — prints the route table for each sandbox.
  • --seccomp — prints the seccomp configuration for each sandbox. okay so several other firejail features such as memory-deny-write-execute, protocol and restrict-namespaces are implemented as seccomp filters. this option will show the global seccomp setting inside the kernel. deep lore fr fr 🧚
  • --top — monitors the most CPU-intensive sandboxes. this command is similar to the regular UNIX top command, however it applies only to sandboxes. same energy, smaller guest list 🔥
  • --tree — prints a tree of all sandboxed processes. family tree reveal 🌳
  • --version — prints program version and exits.
  • --wrap — enables line wrapping in terminals. by default the lines are trimmed. the glow-up is optional bestie 💖
  • --x11 — prints the X11 display number.

🌈 THE FORMAT 🌈

the format for each listed sandbox entry is as follows, exactly:

PID:USER:Sandbox Name:Command

🎀 THE FIELDS (COLUMNS) 🎀

listed below are the available fields (columns) in various firemon commands, in alphabetical order — we're organized, we're that girl:

  • Command — the command used to start the sandbox.
  • CPU% — CPU usage, the sandbox share of the elapsed CPU time since the last screen update.
  • PID — unique process ID for the task controlling the sandbox.
  • Prcs — number of processes running in the sandbox, including the controlling process.
  • RES — Resident Memory Size (KiB), sandbox non-swapped physical memory. it's a sum of the RES values for all processes running in the sandbox.
  • Sandbox Name — the name of the sandbox, if any.
  • SHR — Shared Memory Size (KiB), it reflects memory shared with other processes. it's a sum of the SHR values for all processes running in the sandbox, including the controlling process.
  • Uptime — sandbox running time in hours:minutes:seconds format.
  • USER — the owner of the sandbox.

📜 LICENSE 📜

this program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. literally free, literally iconic 🫶

Homepage: https://firejail.wordpress.com

👀 SEE ALSO 👀

firejail(1), firecfg(1), firejail-profile(5), firejail-login(5), firejail-users(5), jailcheck(1) — go read your sisters' pages too, iykyk 💜

✨ and that's the whole page bestie ✨ this was firemon 0.9.82.2, dated Nov 2026 — mwah, go monitor something, ily 💖🦋🎀

📦 where this page comes from