exit(n) - phpMan

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



_________________________________________________________________________________________________

NAME
       exit - End the application

SYNOPSIS
       exit ?returnCode?
_________________________________________________________________


DESCRIPTION
       Terminate  the process, returning returnCode to the system as the exit status.  If return-
       Code 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 exist 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
       exit, process



Tcl                                                                                       exit(n)

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