OCA Oracle Solaris 11 System Administration Exam Guide (Exam 1Z0-821)

Understanding Users and Groups

User information spells the difference between an executable program file and a running process; that’s the heart of the matter. In Chapter 5, you learned how permissions applied to an executable file can prevent unauthorized users from starting it. Solaris 11 goes deeper than that, and in some cases prohibits specific operations in a program from executing. That is, some programs in Solaris can be run by anyone, but they may not operate as expected unless the user has the right privileges. The format command provides a case in point. You’ll notice by the executable file’s permissions that any user can invoke the command. For it to produce a list of disks the user can then configure, however, they need superuser ...