true, false, i386, u370, i370, xa370(1,C)                      true, false(1,C)



-------------------------------------------------------------------------------
true, false, i386, u370, i370, xa370



PURPOSE

Returns an exit value of zero (true) or non-zero (false).

SYNTAX


true ---|         i370 ---|

false ---|        xa370 ---|

i386 ---|

u370 ---|


DESCRIPTION

The true command returns a zero exit value.  The false command returns a
nonzero value.  These commands are usually used in input to the sh command.

The following commands are links to either true or false depending on the
machine type on which they are executed.

i386   The i386 command returns true if executed on an AIX PS/2 machine and
       false if executed on an AIX/370 machine.

u370   The u370 command returns true if executed on an AIX/370 machine and
       false if executed on an AIX PS/2 machine.

i370   True, if executed on a non-XA AIX/370 machine, false otherwise.

xa370  True, if executed on a XA AIX/370 machine, false otherwise.

EXAMPLE

To construct an infinite loop in a shell procedure:

  while true
  do
     date
     sleep 60
  done

This shell procedure displays the date and time once a minute.  To stop it,
press INTERRUPT (Ctrl-C).




Processed Nov.8, 1990    true, false, i386, u370, i370, xa370(1,C)            1

true, false, i386, u370, i370, xa370(1,C)                      true, false(1,C)



RELATED INFORMATION

See the following command:  "sh, Rsh."




















































Processed Nov.8, 1990    true, false, i386, u370, i370, xa370(1,C)            2