debian man page for lpasswd

lpasswd(8)						      System Manager's Manual							lpasswd(8)

NAME
       lpasswd - Change group or user password

SYNOPSIS
       lpasswd [OPTION]... [name]

DESCRIPTION
       Changes password of user or group name.

       If  the	name  argument is not provided, username of the invoking user is used; the name argument is ignored if lpasswd is run set-uid to a
       different user.

       Entering an empty password (by pressing Enter) aborts the password setting operation.

OPTIONS
       -F, --plainpassword-fd=fd
	      Read password from file descriptor fd, terminated by end of file, '
' or '
'.

       -f, --password-fd=fd
	      Read password hash from file descriptor fd, terminated by end of file, '
' or '
'.

       -g, --group
	      Change password of group name.  By default the password of user name is changed.

       -i, --interactive
	      Ask all questions when connecting to the user database, even if default answers are set up in libuser configuration.

       -P, --plainpassword=password
	      Set the password to password.  Note that the password can be viewed while running lpasswd using tools such as ps(1).

       -p, --password=encrypted
	      Set the password to the password represented by the hash encrypted.  Note that the hash can be viewed while  running  lpasswd  using
	      tools such as ps(1).

EXIT STATUS
       The exit status is 0 on success, nonzero on error.

libuser 							    Jan 12 2005 							lpasswd(8)