faillock:tldr:a488c

This command is used to reset the faillock status of a user. The "sudo" keyword is used to execute the command as a privileged user.

Here's what each part of the command does:

• faillock: It is the command-line tool in Linux that allows administrators to lock user accounts if too many unsuccessful login attempts have been made.
• --user ${user}: This option specifies the user account for which the faillock status needs to be reset. The ${user} is a placeholder that should be replaced with the actual username.
• --reset: This option is used to reset the faillock status of the specified user account, which means removing the lock and resetting the count of unsuccessful login attempts.

Overall, the command sudo faillock --user ${user} --reset resets the faillock status of a specific user account, allowing them to attempt logging in again without being locked out due to previous failures.