@ michael: the double quotes on the RHS of the expression should be removed at any case otherwise the characters will be interpreted as string. Also, the RHS will not be evaluated using regex but by using shell pattern matching, which is a different beast.
For extended regex, really recent bash and ksh93 provide the =~ operator.
---------- Post updated at 12:09 ---------- Previous update was at 12:06 ----------
Quote:
Originally Posted by ygemici
I think it is good to point out that the OK is because the first character of $answer is a letter and the last character is in [a-zA-Z0-9_-] and that the intermediate characters can be anything. I am not sure if that is what the OP has in mind.
Last edited by Scrutinizer; 02-28-2012 at 08:42 AM..
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LEARN ABOUT DEBIAN
gchem3d
GCHEM3D(1) gnome-chemistry-utils GCHEM3D(1)NAME
gchem3d - a small chemical viewer application
SYNOPSIS
gchem3d [OPTION(S)...] [FILE...]
DESCRIPTION
gchem3d is a small chemical viewer application, which can show several chemical file formats.
OPTIONS
The following options are accepted:
-b COLOR, --bgcolor=COLOR
Use the given color as background color. COLOR can be one of "black" (default), "white", "#rrggbb" (don't forget to escape the "#"
character in the shell).
-d MODEL, --display3d=MODEL
Choose how molecules are displayed. MODEL can be one of "BallnStick" (default), "SpaceFill".
-?, --help
Show application help options.
--help-all, --help-*
Print all or just a group of help options. These options are not documented here. Instead see gtk-options(7) and gnome-options(7).
-v, --version
Print gchem3d version information.
SEE ALSO gnome-options(7), gtk-options(7)AUTHORS
Jean Brefort <jean.brefort@normalesup.org>
Program author.
Daniel Leidert <daniel.leidert@wgdd.de>
Manpage author.
COPYRIGHT
Copyright (C) 2002-2007 Jean Brefort
Copyright (C) 2004-2007 Daniel Leidert
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or any
later version published by the Free Software Foundation.
gcu 0.12 $Date: 2009-03-19 10:53:47 +0100 (jeu. 19 mars 2009) $ GCHEM3D(1)