In UNIX systems, two critical files located under etc directory store user account information . Describe the differences between /etc/passwd and the /etc/shadow files as they associate to user information confidentiality.
Explain the extra features which are added when you turn on shadowing.
Explain the pluses and cautions of SUDO, how to set it up also tools available to do so.
Explain the group file. How to manage it and tools available.
Write other commands, tools are available to help the ROOT in managing users and groups from command line or within a script.