MACHID(1)                            SysV                            MACHID(1)



NAME
     machid:  apollo, pdp11, prism, u3b, u3b5, vax - get processor type truth
     value

SYNOPSIS
     apollo

     pdp11

     prism

     u3b

     u3b5

     vax

DESCRIPTION
     The following commands will return a true value (exit code of 0) if you
     are on a processor that the command name indicates.
          apollo
               True if you are on an Apollo.

          pdp11
               True if you are on a PDP-11/45 or PDP-11/70.

          prism
               True if you are on a Prism.

          u3b  True if you are on a 3B20 computer.

          u3b5 True if you are on a 3B5 computer.

          vax  True if you are on a VAX-11/750 or VAX-11/780.

     The commands that do not apply will return a false (non-zero) value.
     These commands are often used within makefiles (see make(1)) and shell
     procedures (see sh(1)) to increase portability.

SEE ALSO
     sh(1), test(1), true(1), make(1).