Installing chmutil on Linux - CRBS/chmutil GitHub Wiki
The instructions below assume Python and pip are installed.
Open a terminal and install via one of the ways below
As super user:
pip install chmutil
or via sudo
sudo pip install chmutil
or install into user's own directory (does not require super user privileges)
pip install chmutil --user
If this option is used then the following must be added to the user's path:
~/.local/bin