Linux realm 命令

$ realm --help
 realm discover -v [realm-name]
   Discover available realm

 realm join -v [-U user] realm-name
   Enroll this machine in a realm

 realm leave -v [-U user] [realm-name]
   Unenroll this machine from a realm

 realm list
   List known realms

 realm permit [-ax] [-R realm] user ...
   Permit user logins

 realm deny --all [-R realm]
   Deny user logins