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chpasswd(8)							   chpasswd(8)

NAME
       chpasswd - change user passwords in batch

SYNOPSIS
       chpasswd [-D binddn] [-P path] [-c des|md5|blowfish | -e] [file]

DESCRIPTION
       chpasswd	 changes passwords for user accounts in batch. It reads a list
       of login and password pairs from standard input or a file and uses this
       information  to	update	the passwords of this user accounts. The named
       account must exist and the password age will  be	 updated.  Each	 input
       line is of the format:

		 user_name:password

       If  the	hash algorithmus is not given on the commandline, the value of
       GROUP_CRYPT or, if not specified,  CRYPT	 from  /etc/default/passwd  is
       used  as hash algorithmus.  If not configured, the traditinal des algo‐
       rithmus is used.

OPTIONS
       -c des|md5|blowfish
	      This option specifies the hash algorithmus, which should be used
	      to encrypt the passwords.

       -e     The passwords are expected to be in encrypted form. Normally the
	      passwords are expected to be cleartext.

       -D, --binddn binddn
	      Use the Distinguished Name binddn to bind to the LDAP directory.
	      The  user will be prompted for a password for simple authentica‐
	      tion.

       -P, --path path
	      The passwd and shadow files  are	located	 below	the  specified
	      directory	 path.	chpasswd  will use this files, not /etc/passwd
	      and /etc/shadow.

FILES
       /etc/default/passwd - default values for password hash

SEE ALSO
       passwd(1), passwd(5), shadow(5)

AUTHOR
       Thorsten Kukuk <kukuk@suse.de>

pwdutils			 Feburary 2004			   chpasswd(8)

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