Settare una acl su cartella linux

• Assign ACL group permission read/write (rw) to a single group: setfacl -m g:groupname:rw- filename
  Option -m : Modify the ACL
• Assign ACL group permission read/write (rw) to a single user: setfacl -m u:userid:rw- filename
• List ACL permissions: getfacl filename
• Remove ACL from a file: setfacl --remove-all filename