icepatch2calc(1) on Linux
The text 3d6149720605, as Debian 9 (Stretch) shipped it.
IcePatch2 tool to compress files and calculate checksums.
Flags it lists
-
--case-insensitive -
--compress -
--help -
--no-compress -
--verbose -
--version -
-V -
-Z -
-h -
-i -
-v -
-z