I already showed you how to rename your command temporarily using the alias command and I promised I will cover the tutorial on how to rename the Linux command permanently using alias. For this, you need to have the startup file. You also already know how to create the startup file. If you are directly reading this post I would recommend you first see: how to rename linux command temporarily and how to create startup files. We first declared Environment variable in .bashrc file and later created our own startupfile called .startup.
We need .startup file to rename Linux command permanently. Open the .startup file using your favourite text editor. I will open using nano.
In startup file I will like to store the alias lsl for “ls -l”. The syntax to create alias is same. If you are confused, see how to alias the command again.