CHPASSWD(8) System Management Commands CHPASSWD(8)NAME
chpasswd - update passwords in batch mode
SYNOPSIS
chpasswd [options]
DESCRIPTION
chpasswd reads a list of user name and password pairs from standard
input and uses this information to update a group of existing users.
Each line is of the format:
user_name:password
By default the supplied password must be in clear-text. Default
encryption algorithm is DES. Also the password age will be updated, if
present.
This command is intended to be used in a large system environment where
many accounts are created at a single time.
OPTIONS
The options which apply to the chpasswd command are:
-e, --encrypted
Supplied passwords are in encrypted form.
-h, --help
Display help message and exit.
-m, --md5
Use MD5 encryption instead DES when the supplied passwords are
not encrypted.
CAVEATS
Remember to set permissions or umask to prevent readability of
unencrypted files by other users.
SEE ALSOpasswd(1), newusers(8), useradd(8).
System Management Commands 03/02/2006 CHPASSWD(8)
