chgpasswd(8) on Linux
The text aab187ca3c6c, as Debian 8 (Jessie) shipped it.
update group passwords in batch mode
Flags it lists
-
--crypt-method -
--encrypted -
--help -
--md5 -
--root -
--sha-rounds -
-R -
-c -
-e -
-h -
-m -
-s