ly(1) on Linux
The text 13d459f299db, as Debian 10 (Buster) shipped it.
Manipulate LilyPond source files Usage: A tool for manipulating LilyPond source files
Flags it lists
-
--encoding -
--help -
--in-place -
--language -
--output -
--version -
-e -
-h -
-i -
-l -
-o -
-v