08-14-2007
The author of the script decides what the exit codes mean. Maybe "exit 1" means a unknown argument was encounted when the script was parsing its arguments. Or maybe "exit 7" means that. It is up to the author to decide. For me "exit 1" usually means the first error that I coded a check for. "exit 2" means the 2nd error I coded a check for. And so on.
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LEARN ABOUT OPENSOLARIS
exit
exit(1T) Tcl Built-In Commands exit(1T)
__________________________________________________________________________________________________________________________________________________
NAME
exit - End the application
SYNOPSIS
exit ?returnCode?
_________________________________________________________________
DESCRIPTION
Terminate the process, returning returnCode to the system as the exit status. If returnCode isn't 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 sig-
nalling 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]} {
puts stderr "unexpected script error: $msg"
if {[info exist env(DEBUG)]} {
puts stderr "---- BEGIN TRACE ----"
puts stderr $errorInfo
puts stderr "---- END TRACE ----"
}
# Reserve code 1 for "expected" error exits...
exit 2
}
SEE ALSO
exec(1T), tclvars(1T)
KEYWORDS
exit, process
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWTcl |
+--------------------+-----------------+
|Interface Stability | Uncommitted |
+--------------------+-----------------+
NOTES
Source for Tcl is available on http://opensolaris.org.
Tcl exit(1T)