Performing Account Maintenance with passwd

In an environment where many users are using the same server, it is important to perform some basic account maintenance tasks. These include locking accounts when they are unneeded for a longer time, unlocking an account, and reporting the password status. Also, an administrator can force a user to change his password on the first occasion. To perform these tasks, the passwd command has several options available:

-l: This enables an administrator to lock an account; for example, passwd -l jeroen will lock the account for user jeroen.

-u: This unlocks an account that has been locked before.

-S: This reports the status of the password for a given account.

-e: This forces the user to change her password on her next login.

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