Bash Scripting – Working of Alias | if else shell script | bash Functions & Arrays

Bash Scripting – Working of Alias, A Bash alias is a shortcut for a command or a sequence of commands. Aliases can be used to make your life easier by saving you time and typing.

To create an alias, you use the alias keyword. The alias name is followed by an equal sign (=) and then the command or sequence of commands that the alias should represent. For example, to create an alias called ll that represents the command ls -l, you would type the following command:

Bash
alias ll="ls -l"
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Once you have created an alias, you can use it by typing the alias name in the terminal. For example, to run the ll alias, you would type:

Bash
ll
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This would be the same as running the ls -l command.

You can also create aliases that accept arguments. To do this, you enclose the arguments in parentheses after the alias name. For example, the following alias accepts a directory as an argument and lists the contents of the directory in long format:

Bash
alias lld="ls -l $1"
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To use the lld alias, you would type the following command:

Bash
lld /home/user
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This would list the contents of the /home/user directory in long format.

Aliases can be very useful for making your shell scripting more efficient and readable. For example, you could create a set of aliases for your favorite commands. You could also create aliases for complex commands that you frequently use.

Here are some tips for using Bash aliases:

Use aliases to save time and typing.
Use aliases to make your shell scripting more efficient and readable.
Create aliases for your favorite commands.
Create aliases for complex commands that you frequently use.
Be careful not to overwrite existing aliases.
Use the unalias keyword to remove an alias.