Expiring a user's password in Linux can be accomplished using the passwd command. Here's how to do it:

1. Log in to your SSH account

Open a terminal and log in with root or sudo access.

2. Expire the user's password

You can expire the user's password using the -e option:

sudo passwd -e username

Replace username with the actual username.

The user will be required to change their password the next time they log in.

Important Considerations:

• Ensure you have the necessary permissions to change another user's password.
• Always choose strong, unique passwords to maintain system security.