This command is used to change a users password. Changing NIS password for user . The password you type is not displayed. You are prompted for the new password twice to make sure you typed what you intended. Given a list of files this command deletes the files in the list.
Useful options are -r recursively remove files.
It removes all files and directories inside any directories given in the list of files. It removes a file regardless of the permissions. You can do this only to files owned by you. It asks for confirmation before removing each file. They can be tremendously destructive and you can loose files you did not intend to remove.