Set Linux FileSystem ACL

Access control lists can be read and set on Linux file systems with the commands getfacl and setfacl.

To get user IDs instead of usernames for the owner and group, use the -n parameter like this: getfact -n /my_data.

Example of setting an acl entry: setfacl -m u:nitin:rw myfile.txt (-m is to modify, -x is to remove Eg. setfacl -x u:nitin myfile.txt)

ACLs can be copied with: getfacl directory_1 | setfact -R --set-file=- directory_2 (the hyphen for the --set-file tells setfacl to read the filename from STDIN)

See more at: https://www.golinuxcloud.com/setfacl-getfacl-command-in-linux