Which shell built-in command can be used to create a shortcut or pseudonym for a longer command? Assume a modern bournE.like shell, such as bash.

`shortcut` is not a standard shell command for creating command aliases.

`ln` is used to create hard or symbolic links to files or directories, not aliases for commands.

`sudo` is used to execute commands with elevated privileges, not to create command shortcuts.

`link` is a system call (and sometimes a command) for creating hard links, similar to `ln`, not command aliases.

The `alias` command is a shell built-in feature that allows users to create custom shorthand names (aliases) for longer commands, frequently used command sequences, or commands with specific options, thus improving command-line efficiency. These aliases persist for the current shell session or until explicitly unset.