chpasswd(8) -- Linux man page

 

NAME

chpasswd - update password file in batch  

SYNOPSIS

chpasswd [-e]  

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 -e switch, the passwords are expected to be cleartext. With the -e 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.  

CAVEATS

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

SEE ALSO

passwd(1), newusers(8), useradd(8)  

AUTHOR

Julianne Frances Haugh (jockgrrl@ix.netcom.com)