From Metograds Wiki
The Linux environments use the same password to authenticate you as a user. To change this password simply:
- log into one of the lab Linux machines or one of the systems that allow remote access using your current login id and password.
yppasswd. You will be asked to enter in the old password.
- You will then be asked to enter in a new password and confirm it by typing it again.
Your password has now been changed for the Linux environment, including your email and access to this wiki.