alias command is mainly used to define a new command (a shortcut name) for a single big command. It helps us to avoid repetitive long typing of commands.
- The shortcut name can be used as a substitute for a single big command because shortcut name will have same functionality as if we write the big command.
- It helps us to save a lot of time when we have to write big command frequently.
- An alias doesn’t replace itself.
Syntax for alias command
- There must be no spaces before or after the equals sign in the alias command.
alias [option] Name='value'
To display all defined alias use the command alias -p. We can also use alias to display all defined alias.
alias -p
alias
Types of alias in Linux
We can create two types of alias in Linux
- Temporary alias
- Permanent alias
Creating Temporary alias
Creating Permanent alias
unalias the alias command
remove any specific alias
To delete any specific alias use commandunalias alias_name Don’t forget to replace alias_name with your alias name
unalias alias_name
remove all aliases
To delete all aliases use the command unalias -a
unalias -a