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Full Discussion: Noob trying to improve
Operating Systems OS X (Apple) Noob trying to improve Post 302990446 by MadeInGermany on Thursday 26th of January 2017 11:07:37 AM
Old 01-26-2017
[^"] is a character that is not a quote
[^"]* is any consecutive number of non-quote characters
\( \) does not mean a character but is a group mark, for later reference
Code:
s/.*href="\([^"]*\).*/\1/p

\1 is the reference. It becomes the string that matched within the \( \). The leading and trailing .* ensure that the entire line is matched, i.e. is deleted+substituted by the back-reference.
\1 actually referes to the 1st \( \); \2 would refer to the 2nd...
The -n sed option suppresses the default print. the /p at the end of the substitution is a print if there was a match. So non-matching lines are not printed.

Last edited by MadeInGermany; 01-26-2017 at 12:13 PM..
This User Gave Thanks to MadeInGermany For This Post:
 

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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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