# passwd(1)

    NAME
         passwd, chfn, chsh - change a login password, full name or shell

    SYNOPSIS
         passwd [user]
         chfn [user] fullname
         chfn [user] shell

    EXAMPLES

         passwd              # Change current user's password

         passwd ast          # Change ast's password (super-user only)

         chsh /usr/bin/mail  # For those who only read mail

         chfn 'Jane Doe'     # Current user is Jane Doe

    DESCRIPTION

         Passwd is used to change your password.  It prompts for the old  and  new
         passwords.  It asks for the new password twice, to reduce the effect of a
         typing error.  Chfn changes the full name (GECOS field) in  the  password
         file.  Chsh changes your login shell.  Do not forget to copy the modified
         password file back to the root file system, or the changes will  be  lost
         when the system is rebooted.

    SEE ALSO
         login(1), su(1), crypt(3), getpwent(3), passwd(5), adduser(8).