look(1) on Linux
The text f1b25a9b9d0b, as Debian 13 (Trixie) shipped it.
display lines beginning with a given string
Flags it lists
-
--alphanum -
--alternative -
--help -
--ignore-case -
--terminate -
--version -
-V -
-a -
-d -
-f -
-h -
-t