ical(1) on Linux
The text a4588fce41d0, as Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
A Hijri/Islamic calendar (and converter)
Flags it lists
-
--dual -
--fixed_view -
--gregorian -
--help -
--hijri -
--umm_alqura -
-d -
-f -
-g -
-h -
-hi -
-u