#passwd

> passwd is a tool on most Unix and Unix-like operating systems used to change a user's password.

* Change your password. ( You may need to use **sudo** )

`passwd {{options}} {{new password}}`

* Change the password of the specified user.

`passwd {{username}} {{new password}}`

* Make the password of the account blank ( It will set the named account passwordless. )

`passwd -d`