3.4. Linux Cheat Sheet

Get Help:

man [command]

System Navigation:

Log into host:	ssh [username]@[host_name_or_ip_address]
move around in shell:	cd~; cd ..; cd -; cd /
log out:	exit; logout
reboot	sudo reboot
command history:	[arrow keys (up and down)]
autocomplete:	[start typing] tab
copy-n-paste in terminal:	[highlight & right-click]

Manage User:

add new user:	sudo adduser [username]
add user to group:	sudo adduser [username] [groupname]
user session:	users; who; w
list all users:	cut -d: -f1 /etc/passwd
list user’s groups:	groups

Manage Files

create empty files:	touch
create folder:	mkdir [foldername]
copy files:	cp [filename] [new_filename]
remove files:	rm [filename]
remove directory	rmdir [directory] (empty folder)
	rm -r [directory_name]
move files:	mv [filename] [path]
rename file	mv [filename] [new filename]
change file permissions:	chmod [mode] [file]
Search for a file:	locate [filename]
	find [dir] -name [filename]

Processes & Services

service management:	service [service] [status/restart/stop/start]
	systemctl [status/restart/stop/start] [service_name]
monitor active services	top; htop
show all services:	ps -aef; service --status-all
stop services:	^-Z (suspend); ^-C (terminate); ^-D (end transmission)
stop processes:	kill [option] [process]

Networking & Software Management

network setting:	ip address
check connectivity:	ping [IP address]
install package:	sudo apt install [package]
update package:	apt install --only-upgrade [package]
remove package	sudo apt remove [package]