gztool(1) on Linux
The text b9621c569ed6, as Debian 11 (Bullseye) shipped it.
extract random-positioned data from gzip files, even like `tail -f`
Flags it lists
-
-C -
-D -
-E -
-F -
-I -
-L -
-P -
-S -
-T -
-W -
-X -
-a -
-b -
-c -
-d -
-e -
-f -
-h -
-i -
-l -
-n -
-p -
-s -
-t -
-u -
-v -
-w -
-x