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Q. How do I delete user Password under Linux? I’d like to disable a password for an account.
A. All user encrypted passwords are stored in /etc/shadow file. The quick way to remove/delete a user password is pass –delete option to passwd command. First, login in as a root user.
Command to delete user password under Linux
Type the following command to delete a user password:
# passwd --delete username
# passwd -d username
Above command delete a user’s password (make it empty). This is a quick way to disable a password for an account. It will set the named account passwordless. User will not able to login. It is also a good idea to setup user shell to nologin to avoid security related problems:
# usrmod -s /sbin/nologin usernameFor example to delete password for user sweta, Type:
# passwd -d sweta
# usrmod -s /sbin/nologin sweta