Alias
Alias in shell refers to giving another name to a command or group of commands. It is very useful when a name of a command is long. With the help of alias, we can avoid typing a bigger name and invoke a command by a name as per your convenience.
To create an alias, alias shell builtin command is used. The syntax is as follows:
alias alias_name="Commands to be aliased"
Creating alias
To print a disk space in a human-readable format, we use the df
command with the -h
option. By making alias of df -h
to df
, we can avoid typing again and again df -h
.
The output of the df
command before aliasing it to df -h
is shown in the following screenshot:
$ df
Now, to create alias for df -h to df, we will execute the following command:
$ alias df="df -h" # ...
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