Linux - how to use the alias command

The alias command allows you to create command shortcuts within your shell. Below shows you how,

move to your home directory,

[root@localhost ~]# cd ~

add the alias of os which will show the output of 'uname -a'

[root@localhost ~]# cat >> .bash_profile
[root@localhost ~]# alias os='uname -a'

Reload you environment variables for your new alias to take effect

[root@localhost ~]# . .bash_profile

Test your new alias 

[root@localhost ~]# os
Linux localhost.localdomain 2.6.18-92.1.6.el5PAE #1 SMP Fri Jun 20 02:51:01 EDT 2008 i686 i686 i386 GNU/Linux

About the Author


R Donato

Rick Donato is the Founder and Chief Editor of He currently works as a Principal Network Security Engineer and has a keen interest in automation and the cloud.

You can find Rick on Twitter @f3lix001