Assume that, in a military installation, the Unix operating system is in use for all computing systems, and the users of the systems consist of soldiers with no information technology (I.T.) training, non-military contractors, and software engineers.

Some users hold security clearances that allow them to manage particular restricted access files that are necessary for their work.

The files of interest for the work of these users include software (source code, etc.) for military projects, work documents.

Access to some work documents and source code is restricted based on the users security clearance.

(a) List the file permissions flags for the files, for all types of users

Software Files	Soldiers- no permissions
	Non military contractors
	Software Engineers- full permission
Job-Dependent Work documents (documents appropriate for the particular work done by the user)	Soldiers
	Non military contractors
	Software Engineers