Ever wondered who else has access to your Linux system? Knowing how to list users is a fundamental skill for system administrators and curious individuals alike. Thankfully, Linux offers several straightforward commands to peek behind the curtain.
The simplest method is using the `getent passwd` command. This displays a comprehensive list of all user accounts, including system accounts, formatted in a traditional password file style.
For a cleaner output focusing solely on usernames, try `cut -d: -f1 /etc/passwd`. This command extracts the first field (username) from each line in the `/etc/passwd` file, providing a concise list.
Another useful command is `compgen -u`. It elegantly lists all usernames suitable for command-line completion, excluding many system accounts and focusing on more 'human' users. This method is particularly useful when you want to focus on actual interactive users.
Mastering these commands gives you valuable insight into your Linux system's user landscape. Explore and discover who's sharing your digital realm!
