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Top Forums Shell Programming and Scripting extract a string within a string using a pattern Post 302469174 by adshocker on Thursday 4th of November 2010 11:24:01 PM
Old 11-05-2010
Quote:
Originally Posted by Chubler_XL
You didn't mention what shell. If you use the external sed command this should work for most:
Code:
SOURCE=`echo $file | sed "s/^AR_//;s/_.*//"`

thanks. how can i get the shell ? i'm using Linux.

Code:
[ ~]$ uname
Linux

how can i do this in sed even if prefix is other than AR? i tried the following but doesnt work.
Code:
[ ~]$ source=`echo $file | sed "s/^*_//;s/_.*//"`
[ ~]$ echo $source
AR
[ ~]$ source=`echo $file | sed "s/*_//;s/_.*//"`
[ ~]$ echo $source
AR

Quote:
Originally Posted by Chubler_XL
For bash/ksh
Code:
SOURCE=${file#AR_}
SOURCE=${SOURCE%%_*}

thanks.. actually the prefix can be other than AR. so i tried
Code:
file=AR_LEGACY_20101104_105500.txt
source=${file#*_}
source=${source%%_*}
echo $source

seems to work.
 

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SUSPICIOUS-SOURCE(1)					      General Commands Manual					      SUSPICIOUS-SOURCE(1)

NAME
suspicious-source - search for files that are not the GPL's "preferred form of modification" SYNOPSIS
suspicious-source [options] DESCRIPTION
suspicious-source is a script that outputs a list of files which are not common source files. This should be run in the root of a source tree to find files which might not be the "preferred form of modification" that the GPL and other licenses require. The files inside version control system directories (like .bzr/ or CVS/) are not considered. OPTIONS
-h, --help Show this help message and exit. -v, --verbose Print more information. -d directory, --directory=directory Check the files in the specified directory instead of the current directory. -m mimetype, --mimetype=mimetype Add mimetype to list of white-listed MIME types. -e extension, --extension=extension Add extension to list of white-listed extensions. AUTHORS
suspicious-source and this manpage have been written by Benjamin Drung <bdrung@debian.org>. Both are released under the ISC license. DEBIAN
Debian Utilities SUSPICIOUS-SOURCE(1)
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