csh(1) on Linux
The text 5274e1d011e7, as Debian 1.1 (Buzz) shipped it.
a shell (command interpreter) with C-like syntax
Flags it lists
-
-V -
-X -
-b -
-c -
-e -
-f -
-i -
-n -
-s -
-t -
-v -
-x -
-y