Whoever creates the file on /data make automatically owner group should be the group owner of
When user creates the file/directory, user owner will be user itself and group owner will be the
primary group of the user.
There is one Special Permission SGID , when you set the SGID bit on directory,When users
creates the file/directory automatically owner group will be same as a parent.
1. chmod g+s /data
2. Verify using: ls -ld /data
You will get: drwxrws—