guest@quest
simulated · local only
working notes
Commands, without the wall of text.
Move
- pwd
- where am I?
- ls -la
- list all with metadata
- cd path
- change directory
- *, ?
- match path names
Files
- mkdir -p dir
- create a tree
- cp -r a b
- copy recursively
- mv a b
- move or rename
- ln -s a b
- create a symbolic link
Read & find
- head / tail
- sample either end
- grep -rn text dir
- search content
- find . -type f
- search paths
- man command
- open its manual
Streams
- a | b
- pipe stdout into stdin
- > / >>
- write / append stdout
- < file
- read stdin from file
- 2> file
- write stderr
Text
- sort | uniq -c
- group and count
- cut -d: -f1
- select fields
- sed / awk
- transform records
- xargs command
- turn input into args
Shell
- export X=value
- set environment
- $(command)
- capture output
- a && b / a || b
- branch on status
- history
- review the session
Access
- stat path
- inspect metadata
- chmod 640 file
- set exact mode
- chown user:group
- change ownership
- id / groups
- inspect identity
Operate
- ps / pgrep / kill
- manage processes
- tar -czf
- compressed archive
- df -h / free -h
- disk / memory
- ip / curl / ssh
- network layers
Services
- apt install pkg
- install software
- systemctl status
- inspect a unit
- systemctl enable
- start it at boot
- journalctl -u
- read unit logs