chmod(1) on Linux
The text 30a391f7cafe, as Debian 9 (Stretch) shipped it.
change file mode bits
Flags it lists
-
--changes -
--help -
--no-preserve-root -
--preserve-root -
--quiet -
--recursive -
--reference -
--silent -
--verbose -
--version -
-R -
-c -
-f -
-v