Linux Commands

The new category shorts will be a compact blogpost about the essential information about a topic.

In further posts i will explain some basic information about Linux and his history, but this post will only contain some basic commands. Keep in mind that there are a lot of different shells, I’m using usually the default one: bash (Bourne-Again-Shell).

Command	Description
pwd	prints the working directory
hostname	prints hostname of the working computer
logname	prints username
cat	prints content of a file
ls	prints content of folder
cd	move within folder
mkdir	creates folder
rmdir	removes folder
rm	removes files
touch	create files
cp	copies a file/folder
mv	moves a file/folder
sudo	uses the superuser (admin) -> usually used in front of another command
sudo su	enables admin session within the terminal (use with care!)
useradd <user>	add new user
userdel <user>	removes user
passwd <user>	changes password for a user
su <user>	changes user
addgroup <group>	add new group
usermod -a -G <group> <user>	adds user to group
groupdel <group>	removes group
chmod <permission> <file/folder>	changes permissions of a file/folder
chown <user> <file/folder>	changes owner of a file/folder
apt update	updates local repository list (shows apps which could be updated)
apt upgrade	install available updates
apt install <packagename>	installs new application
apt remove <packagename>	uninstalls application
nano <file>	text editor
vim <file>	text editor
head <file>	prints first 10 lines of file
less <file>	prints last 10 lines of file
more <file>	prints file content, shows more by pressing space
ifconfig	prints network settings
df	prints disk usage
htop	resource monitor
systemctl	manage services
kill	terminates process
dig	prints dns information
help <cmd>	shows information about a specific command

Cheers!