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exit(n)			     Tcl Built-In Commands		       exit(n)

______________________________________________________________________________

NAME
       exit - End the application

SYNOPSIS
       exit ?returnCode?
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DESCRIPTION
       Terminate  the  process,	returning returnCode to	the system as the exit
       status.	If returnCode is not specified then it defaults	to 0.

EXAMPLE
       Since non-zero exit codes are usually interpreted as error cases	by the
       calling	process,  the  exit  command is	an important part of signaling
       that something fatal has	gone wrong. This code fragment	is  useful  in
       scripts to act as a general problem trap:

	      proc main	{} {
		  # ...	put the	real main code in here ...
	      }

	      if {[catch {main}	msg options]} {
		  puts stderr "unexpected script error:	$msg"
		  if {[info exists env(DEBUG)]}	{
		      puts stderr "----	BEGIN TRACE ----"
		      puts stderr [dict	get $options -errorinfo]
		      puts stderr "----	END TRACE ----"
		  }

		  # Reserve code 1 for "expected" error	exits...
		  exit 2
	      }

SEE ALSO
       exec(n)

KEYWORDS
       abort, exit, process

Tcl								       exit(n)

NAME | SYNOPSIS | DESCRIPTION | EXAMPLE | SEE ALSO | KEYWORDS

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