1exit(n)                      Tcl Built-In Commands                     exit(n)
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NAME

8       exit - End the application
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SYNOPSIS

11       exit ?returnCode?
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DESCRIPTION

16       Terminate  the  process, returning returnCode to the system as the exit
17       status.  If returnCode isn't specified then it defaults to 0.
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EXAMPLE

20       Since non-zero exit codes are usually interpreted as error cases by the
21       calling  process,  the  exit command is an important part of signalling
22       that something fatal has gone wrong.  This code fragment is  useful  in
23       scripts to act as a general problem trap:
24              proc main {} {
25                  # ... put the real main code in here ...
26              }
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28              if {[catch {main} msg]} {
29                  puts stderr "unexpected script error: $msg"
30                  if {[info exist env(DEBUG)]} {
31                      puts stderr "---- BEGIN TRACE ----"
32                      puts stderr $errorInfo
33                      puts stderr "---- END TRACE ----"
34                  }
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36                  # Reserve code 1 for "expected" error exits...
37                  exit 2
38              }
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SEE ALSO

42       exec(n), tclvars(n)
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KEYWORDS

46       exit, process
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50Tcl                                                                    exit(n)