GNU/Linux command : Changing Passwords

commandline session $sudo – [sudo] password for jeffrin: sudo: -: command not found $ $su – Password: root>passwd -e jeffrin passwd: password expiry information changed. root>exit logout $login jeffrin login: Cannot possibly work without effective root $sudo login jeffrin [sudo] password for jeffrin: sudo: Account or password is expired, reset your password and try again …

Examining /etc/passwd file in Typical Unix-like OS

ABOUT /etc/passwd file The /etc/passwd file is a text-based database of information about users that may log into the system or other operating system user identities that own running processes. In many operating systems this file is just one of many possible back-ends for the more general passwd name service. The file’s name originates from …