Linux Troubleshooting Cheat Sheet

2 pages · 12 commands

  1. 1
    systemd & journalctl
    8 commands · verified systemd 255, flags verified via `systemctl --help` / `journalctl --help`, 2026-08-20
  2. 2
    Network & Process Inspection
    4 commands · verified ss (iproute2, Ubuntu 24.04), lsof 4.95.0, strace, tcpdump 4.99.4 — all flags verified via `<cmd> --help`; netstat verified via man7.org/linux/man-pages/man8/netstat.8.html (net-tools not installed in this environment, so its flags were docs-checked rather than run locally), 2026-08-20