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Full Discussion: Regular expression match
Top Forums Shell Programming and Scripting Regular expression match Post 302948755 by rbatte1 on Thursday 2nd of July 2015 05:45:05 AM
Old 07-02-2015
I think what is missing from is here is the follow up comment that if you want to ensure that a hyphen is there, keep it as a literal character without any special meaning, i.e. drop the meta-character *


You would change this expression:-
Code:
....^((17|18|19|20)[0-9][0-9]|[0-9][0-9])-*([1-9]|0[1-9]|1[012])-*([1-9]|0[1-9]|[12][0-9]|3[01])$....

...to this:-
Code:
....^((17|18|19|20)[0-9][0-9]|[0-9][0-9])-([1-9]|0[1-9]|1[012])-([1-9]|0[1-9]|[12][0-9]|3[01])$....

Does this help clarify what you need to do?


Robin
 

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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)
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