diff options
Diffstat (limited to 'doc/exit.n')
-rw-r--r-- | doc/exit.n | 6 |
1 files changed, 3 insertions, 3 deletions
@@ -5,7 +5,7 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: exit.n,v 1.9 2007/12/13 15:22:32 dgp Exp $ +'\" RCS: @(#) $Id: exit.n,v 1.10 2008/10/17 10:22:25 dkf Exp $ '\" .so man.macros .TH exit n "" Tcl "Tcl Built-In Commands" @@ -24,10 +24,12 @@ system as the exit status. If \fIreturnCode\fR is not specified then it defaults to 0. .SH EXAMPLE +.PP Since non-zero exit codes are usually interpreted as error cases by the calling process, the \fBexit\fR 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: +.PP .CS proc main {} { # ... put the real main code in here ... @@ -45,9 +47,7 @@ if {[catch {main} msg options]} { \fBexit\fR 2 } .CE - .SH "SEE ALSO" exec(n) - .SH KEYWORDS exit, process |