• Compute using UNIX system

  Create three new users.  Create a new group named developers.  Add the three new users to the developers group, in a single command.

  Create a file named secretstuff.txt in the home directory of one of your new users. Set the permissions on this file so that only the user has read access to the file (group and world have no access whatsoever). Document your steps in completing this. Verify that the user can still read and write to this file, but others cannot access it.