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



NAME
       chpasswd - update password file in batch

SYNOPSIS
       chpasswd [--encrypted] [--md5]

DESCRIPTION
       chpasswd  reads  a  file  of user name and password pairs from standard
       input and uses this information to update a group  of  existing  users.
       Without the --encrypted switch, the passwords are expected to be clear-
       text. With the --encrypted switch, the passwords are expected to be  in
       encrypted form.  Each line is of the format

              user_name:password

       The  named user must exist.  The supplied password will be encrypted as
       necessary, and the password age updated, if present.

       This command is intended to be used in a large system environment where
       many accounts are created at a single time.

       The --md5 switch allows using MD5 encryption instead of the default DES
       encryption when the supplied passwords are  not  already  in  encrypted
       form.

CAVEATS
       The input file must be protected if it contains unencrypted passwords.

SEE ALSO
       passwd(1), newusers(8), useradd(8)

AUTHOR
       Julianne Frances Haugh (jockgrrlATix.com)



                                                                   CHPASSWD(8)