You may forget the complex and lengthy Linux commands after certain period of time unless you’re a heavy command line user. Sure, there are a few ways to recall the forgotten commands. You could simply save the frequently used commands and use them on demand. Also, you can bookmark the important commands in your Terminal and use whenever you want. And, of course there is already a built-in “history” command available to help you to remember the commands. Another easiest way to remember such long commands is to simply create an alias (shortcut) to them. Not just long commands, you can create alias to any frequently used Linux commands for easier repeated invocation. By this approach, you don’t need to memorize those commands anymore. In this guide, we are going to learn about alias and unalias commands with examples in Linux.
The alias command
The alias command is used to run any command or set of commands (inclusive of many options, arguments) with a user-defined string. The string could be a simple name or abbreviations for the commands regardless of how complex the original commands are. You can use the aliases as the way you use the normal Linux commands. The alias command comes preinstalled in shells, including BASH, Csh, Ksh and Zsh etc.
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