env(1) on Linux
The text b3e4b65aa8ce, as Debian 10 (Buster) shipped it.
run a program in a modified environment
Flags it lists
-
--chdir -
--debug -
--help -
--ignore-environment -
--null -
--split-string -
--unset -
--version -
-0 -
-C -
-S -
-i -
-u -
-v