NAME

       true - return true value

SYNOPSIS

       true

DESCRIPTION

       The true utility shall return with exit code zero.

OPTIONS

       None.

OPERANDS

       None.

STDIN

       Not used.

INPUT FILES

       None.

ENVIRONMENT VARIABLES

       None.

ASYNCHRONOUS EVENTS

       Default.

STDOUT

       Not used.

STDERR

       Not used.

OUTPUT FILES

       None.

EXTENDED DESCRIPTION

       None.

EXIT STATUS

       Zero.

CONSEQUENCES OF ERRORS

       None.

       The following sections are informative.

APPLICATION USAGE

       This  utility  is  typically  used in shell scripts, as shown in the EXAMPLES section. The
       special built-in utility : is sometimes more efficient than true.

EXAMPLES

       This command is executed forever:

              while true
              do
                  command
              done

RATIONALE

       The true utility has been retained in this volume of IEEE Std 1003.1-2001, even though the
       shell  special  built-in  : provides similar functionality, because true is widely used in
       historical scripts and is less cryptic to novice script readers.

FUTURE DIRECTIONS

       None.

SEE ALSO

       false , Shell Commands

COPYRIGHT

       Portions of this text are reprinted and  reproduced  in  electronic  form  from  IEEE  Std
       1003.1,  2003  Edition,  Standard  for Information Technology -- Portable Operating System
       Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003  by
       the  Institute  of  Electrical  and  Electronics Engineers, Inc and The Open Group. In the
       event of any discrepancy between this version and the original IEEE  and  The  Open  Group
       Standard,  the  original  IEEE  and  The  Open Group Standard is the referee document. The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .