In cells that use an AFS and kerberos enabled login utility, the password is the same for both logging in and authenticating with AFS. In this case, generally you use a single command, kpasswd, to change the password. But this may vary from system to system, if in doubt contact your local system administrator.

If your machine does not use an AFS and kerberos enabled login utility, there are separate passwords for logging into the local file system and authenticating with AFS. (The two passwords can be the same or different, at your discretion.) In this case, use the kpasswd command to change your Kerberos password and the UNIX passwd command to change your UNIX password.