https://wiki.archlinux.org/index.php/Access_Control_Lists
http://bencane.com/2012/05/27/acl-using-access-control-lists-on-linux/
http://users.suse.com/~agruen/acl/linux-acls/online/

sudo tune2fs -l /dev/sdXY | grep "Default mount options:"
sudo cat /proc/mounts | grep noacl

http://superuser.com/questions/237802/how-to-set-default-permissions-for-files-moved-or-copied-to-a-directory
http://superuser.com/questions/180545/setting-differing-acls-on-directories-and-files?rq=1
http://stackoverflow.com/questions/580584/setting-default-permissions-for-newly-created-files-and-sub-directories-under-a

http://www.unixmen.com/introduction-access-control-lists-acl/

2019
https://habr.com/ru/post/469667/