SETFACL - set file access control lists or set special permissions to a file or directory.

FORMAT
       setfacl [-bkndRLPvh] [{-m|-x} acl_spec] [{-M|-X} acl_file] file ...

       setfacl --restore=file

DESCRIPTION
       This  utility  sets  Access  Control Lists (ACLs) of files and directories.  On the command line, a sequence of commands is followed by a sequence of files (which in turn can be followed by another sequence of commands, ...).

       The options -m, and -x expect an ACL on the command line. Multiple ACL entries are separated by comma characters (`,'). The options -M, and  -X ... Read more »