squid(8) on Linux
The text 9ddee3bc8c61, as Debian 2.0 (Hamm) shipped it.
Internet ObjectCache
Flags it lists
-
-C -
-D -
-F -
-R -
-U -
-V -
-Y -
-a -
-b -
-f -
-h -
-i -
-k -
-s -
-u -
-v -
-z