3.2.2.2 Ownership Directives

%g

File's group name, or numeric group ID if the group has no name.

%G

File's numeric group ID.

%u

File's user name, or numeric user ID if the user has no name.

%U

File's numeric user ID.

%m

File's permissions (in octal). If you always want to have a leading zero on the number, use the '#' format flag, for example '%#m'.