How to change your password via Command Line in Linux

1. Type in the following command: passwd and hit enter!
2. Now you will need to enter your current password.

   Changing password for YOURNAME.
   (current) UNIX password:

   Type in your password and hit enter

3. Now enter your new password:

   Enter new UNIX password:

4. Retype your new password:
   
   Retype new UNIX password:

That’s all! Now you should be able to use your new password