Linux - System Commands

Welcome to the first part of the Linux Basic Commands series.

In this post, we’ll cover system basic commands in linux OS.

👉 Next up: Linux - File Commands

System Basic Commands

arch -- Print machine architecture

uname -- os name information

uname-a -- all os information like os name, kernal version, hostname

cat /etc/redhat-release -- to check the linux version

hostname -- to view the current host eg:sdbt.localdomain

hostname-i -- to view network ip address

ifconfig -- also view ip address

id -- print group name and user name for the current id

logname -- print the user name

uptime -- show the system start time

date -- print date and time

date +%m%d%y -- print like month, day, year eg:12/02/24

who -- to check the number of users

who am i -- to identify which user is me

history -- print the history commands

history -c -- to clear the history

clear -- use to clear the terminal

alias -- use to restore the command into a user variable eg: alias cl=clear

unalias -- use to remove the alias eg: unalias cl

man -- man is a manual page for linux commands

cat /proc/cpuinfo -- to check number of cpu

cat /proc/meminfo -- to check memory information

exit -- to logout