The chage command in Linux is used to change user password expiry information. It allows administrators to set various password aging policies for user accounts, such as:
- Maximum number of days a password is valid before it must be changed.
- Minimum number of days that must pass before a user can change their password again.
- Number of days of warning before a password expires.
- Setting an account expiration date.
For example, you can use chage to set the maximum password age for a user account like this:
sudo chage -M 90 usernameThis command sets the maximum password age to 90 days for the specified user.
