Controlling access to files under Linux is a very important issue. Chmod is a method for modifying file permissions. Today, another way to modify access permissions for files is introduced. File access control list
Acl is an abbreviation of access control list. In Linux, acl gives users and administrators better ability to read and write and grant permissions. There are two main commands in acl. Getfacl View file's acl information. Setfacl set file acl information <!--[if !supportLists]-->1, <!--[endif]-->getfacl View the file's acl information where file: is followed by the path of the file and Name Owner: The owner of the file Group: The group of the file User:: The permissions of the file owner Group:: The permissions of the file group Other:: The permissions of others