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Top Forums Shell Programming and Scripting How to store regular expression in a variable? Post 302952189 by rdineshredy on Friday 14th of August 2015 03:51:40 PM
Old 08-14-2015
How to store regular expression in a variable?

Hi,

Im facing a weird behavior storing regular expression in a vaiable.

Let us consider
Code:
>file_name=CTP02_[0-9]*.tar

when I echo the above variable its displaying below which is file
Code:
CTP02_[0-9]*tar

but when I create a file with name CTP02_1234.tar, and when I echo $file_name its showing CTP02_1234.tar not CTP02_[0-9]*tar.gz Why this issue ? How to overcome ? I need to need to use this in grep

My scenario is, to find the number of files which are of type CTP02_[0-9]*.tar in a folder.

Appreciate your help

Thanks

Last edited by Don Cragun; 08-14-2015 at 05:39 PM.. Reason: Add CODE and ICODE tags.
 

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BF_TAR(1)						    Bogofilter Reference Manual 						 BF_TAR(1)

NAME
bf_tar - shell script to write a tar file of a bogofilter directory to stdout SYNOPSIS
bf_tar [-r] [-R] bogofilter_directory DESCRIPTION
bf_tar bundles a bogofilter working directory in tar format and copies it to standard output (your console, or where you redirect it, see EXAMPLES below). OPTIONS
The -r option causes bf_tar to remove inactive log files after the archive has been written successfully. The default is to leave log files. The -R option causes bf_tar to remove inactive log files before the archive is written. This may reduce chances that the resulting archive is recoverable should it become damaged. The archive may be smaller though. The default is to leave log files. EXIT STATUS
The script exits with status code 0 if everything went well, and nonzero if it encountered trouble. EXAMPLES
o bf_tar ~/.bogofilter > outfile.tar Writes a standard .tar file containing the essential files from ~/.bogofilter to outfile.tar. o bf_tar ~/.bogofilter | gzip -9 -c > outfile.tar.gz Writes a gzipped .tar.gz file containing the essential files from ~/.bogofilter to outfile.tar.gz. o bf_tar `pwd`/mydirectory > outfile.tar Prepend $(pwd)/ or `pwd`/ if you want to specify an absolute path instead of a relative path. NOTES
This script is meant for use with Berkeley DB based bogofilter versions. This script requires a SUSv2 compliant pax utility. This script expects a SUSv2 compliant shell. Solaris systems should have the SUNWxcu4 package installed (when bogofilter is configured) so that /usr/xpg4/bin/sh can be used. AUTHORS
Matthias Andree Bogofilter 03/15/2010 BF_TAR(1)
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