Method System.innetgr()
- Method innetgr
 boolinnetgr(stringnetgroup,string|voidmachine,string|voiduser,string|voiddomain)- Description
 Searches for matching entries in the netgroup database (usually /etc/netgroup). If any of the
machine,userordomainarguments are zero or missing, those fields will match any value in the selectednetgroup.- Note
 This function isn't available on all platforms.