B.9. Lab B.9: Change a Password in Linux
This lab requires a Linux workstation.
A user can change their password at any time (unless you have locked this ability) and should be encouraged to do so if they feel their password might have become compromised. Here are the steps a user would follow to change their own password:
From the desktop, choose Programs
Accessories 
Terminal.NOTE
Your menu choices might differ slightly based upon the Linux distribution you are using.
At the prompt, type passwd.
Enter the old password at the prompt.
Enter what you want the password to now be at the next prompt. If the value given does not meet the requirements configured for the system (password length, mix of alphanumeric characters, and so forth), it will not be accepted.
At the next prompt, enter the new value again. This value must match what was typed in before or the password will not be changed.
When the message appears stating that the password has been changed, exit the terminal window.