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Full Discussion: trapping errors
Top Forums UNIX for Dummies Questions & Answers trapping errors Post 302259959 by TimHortons on Wednesday 19th of November 2008 10:34:15 AM
Old 11-19-2008
Okay, I want to trap any system error messages that may occur within a unix shell script. When I do a mkdir command and it fails how to trap the error.
When my sqr program fails with "Error! SQR Failed To Process" how to trap the error and exit the shell script with an exit 99
 

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LEARN ABOUT DEBIAN

twill-sh

TWILL(1)							  [FIXME: manual]							  TWILL(1)

NOM

       twill-sh - a simple scripting language for Web browsing

SYNOPSIS

       twill-sh [option] [script(s)]

DESCRIPTION

       Twill is a simple language that allows users to browse the Web from a command-line interface. With twill, you can navigate through Web
       sites that use forms, cookies, and most standard Web features. twill-sh lets you interactively browse the Web.

OPTIONS

       --help/-h
	   print usage information

       --version/-v
	   Show version information and exit

       --quiet/-q
	   Do not show normal output

       --interactive/-i
	   Drop into an interactive shell after running files if any

       --fail/-f
	   Exit on first file which fails

       --never-fail/-n
	   Continue executing scripts even if errors occur

       --url/-u URL
	   Start at the given URL before each script

SEE ALSO

       twill-fork (1).

AUTHORS

       Twill was written by C. Titus Brown titus@idyll.org and

       This manual page was written by Arnaud Fontaine arnau@debian.org for the Debian system (but may be used by others). Permission is granted
       to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by
       the Free Software Foundation.

       On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.

COPYRIGHT

       Copyright (C) 2007 Arnaud Fontaine

[FIXME: source] 						  april 10, 2007							  TWILL(1)
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