iprocess(1) on Linux
The text 21b86f396863, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy) shipped it. The page shows this text now.
simple image processing operations
Flags it lists
-
--add -
--flip -
--flop -
--help -
-o