chpasswd aix

The chpasswd command is introduced that allows the user to change the password in non-interactive form, for example from a script.

An example on how to change the password of user adrian to passwd follows:

# chpasswd -?
chpasswd: Not a recognized flag: ?
Usage:
chpasswd [-R load_module] [-e] [ -f flags | -c ]
# chpasswd
adrian:passwd
^D
#

The chpasswd command administers users' passwords. The root user can supply or change users' passwords specified through standard input. Each line of input must be of the following format.

username:password

Only root users can set passwords with this command.

By default, the chpasswd command sets the ADMCHG flag for the users. The -f option may be used with other valid flags to override the default. The -c option clears all password flags.

The password field can be cleartext or a value encrypted with the crypt algorithm. The -e option indicates that passwords are of encrypted format. Please note that all passwords in a batch must conform to the same format.

Flags

-c	Clears all password flags.
-e	Specifies that the passwords are of encrypted format.
-f flags	Specifies the comma separated list of password flags to set. Valid flag values are: ADMIN, ADMCHG, and/or NOCHECK. Refer to the pwdadm command documentation for details about these values.
-R load_module	Specifies the loadable I&A module used to change users' passwords

See Also

UNIX and AIX concepts