I've installed ACL on my Ubuntu:
aptitude install acl
What is the next step ? /etc/fstab ?
# /etc/fstab: static file system information. # # Use 'blkid -o value -s UUID' to print the universally unique identifier # for a device; this may be used with UUID= as a more robust way to name # devices that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/sda1 during installation UUID=54dd976c-b95d-4f44-b4f7-516107dbed85 / ext4 errors=remount-ro 0 1 # swap was on /dev/sda2 during installation UUID=b03c5549-9b4a-444f-a1ff-6c1e3c767836 none swap sw 0 0 /dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0