NAME
chpasswd - update passwords in batch mode
SYNOPSIS
chpasswd [options]
DESCRIPTION
The chpasswd command 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
The supplied passwords must be in clear-text.
PAM is used to update the password in the system database according to
the PAM chpasswd configuration.
When chpasswd fails to update a password, it continues updating the
passwords of the next users, and will return an error code on exit.
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:
-S, --stdout
Report encrypted passwords to stdout instead of updating password
file.
-h, --help
Display help message and exit.
CAVEATS
Remember to set permissions or umask to prevent readability of
unencrypted files by other users.
FILES
/etc/pam.d/chpasswd
PAM configuration for chpasswd.
SEE ALSO
passwd(1), newusers(8), useradd(8).