LAB 16: THE case STATEMENT

LAB 16: THE case STATEMENT

1. The ps command is different on BSD and AT&T UNIX. On AT&T UNIX, the command to list all processes is:

    ps ef 

   
   

   On BSD UNIX and Linux, the command is

    ps aux 

   
   

   Write a program called systype that will check for a number of different system types. The cases to test for will be

   AIX

   Darwin (Mac OS X)

   Free BSD

   HP-UX

   IRIX

   Linux

   OS

   OSF1

   SCO

   SunOS (Solaris / SunOS)

   ULTRIX

   Solaris, HP-UX (10.x+), SCO, and IRIX are AT&T-type systems. The rest are BSD-ish.

   The version of UNIX/Linux you are using will be printed to stdout . The system name can be found with the uname “s command or from the /etc/motd file.