Linux Admin Checks and Reference
Summary
This note is a quick reference for the kinds of checks that often support Linux administration and troubleshooting.
Runtime and service checks
| Check | Purpose |
|---|
systemctl status <service> | confirm service state |
ps aux | inspect processes |
journalctl -xe | inspect recent system and service events |
User and path checks
| Check | Purpose |
|---|
whoami | confirm execution user |
pwd | confirm current working directory |
ls -l | inspect ownership and permissions quickly |
System and scope checks
| Check | Purpose |
|---|
hostnamectl | confirm host identity and basic system state |
ip addr | inspect network context |
ip route | inspect route and default path |
Example first-pass check
whoami
pwd
hostnamectl
ip addr
systemctl status sshd
journalctl -xe
Notes
- this note is intentionally broad and support-oriented
- deeper command groups still belong in more specific Linux and Fedora notes
- the goal is to support quick narrowing of Linux issues, not replace fuller guides
Official documentation