sgrep(1) on Linux
The text 408cebfc3d4c, as Debian 3.0 (Woody) shipped it.
search a file for a structured pattern
Flags it lists
-
-- -
-C -
-D -
-N -
-O -
-P -
-S -
-T -
-V -
-a -
-c -
-d -
-e -
-f -
-h -
-i -
-l -
-n -
-o -
-p -
-s -
-t