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Full Discussion: Searching word in a file with awk
Top Forums Shell Programming and Scripting Searching word in a file with awk Post 302213160 by studieu on Wednesday 9th of July 2008 10:58:04 AM
Old 07-09-2008
Searching word in a file with awk
Hello everyone!

I use a script to query for installed packages with yum (I use RHEL 4 with yum installed) and the output is redirected to a file. My script scan this file to find a package and the version of it.

The script works fine until I search for a package name with special characters. So if I search for gcc.x86_64 I get all the info I need but if I search for gcc-c++.x86_64. I don't get anything.

My search string looks like this :
Code:
version=$(awk '/^gcc.x86_64/ { print $2}' /tmp/yum_output.txt)

The ouput of yum is :
Code:
Setting up repositories
Reading repository metadata in from local files
Installed Packages
gcc.x86_64                               3.4.6-3                installed

So if I echo version, I get this :
Code:
# version=$(awk '/^gcc.x86_64/ { print $2}' /tmp/yum_output.txt)
# echo $version
3.4.6-3
#

When I do the same thing with gcc-c++.x86_64, I get nothing if I echo version.
Code:
# version=$(awk '/^gcc-c++.x86_64/ { print $2}' /tmp/yum_output.txt)
# echo $version

#


Is there any way I can get this to work?
Last edited by radoulov; 07-09-2008 at 12:23 PM.. Reason: please use code tags
 

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LEARN ABOUT CENTOS

reposync

reposync(1)															       reposync(1)

NAME

       reposync - synchronize yum repositories to a local directory

SYNOPSIS

       reposync [options]

DESCRIPTION

       reposync is used to synchronize a remote yum repository to a local directory, using yum to retrieve the packages.

OPTIONS

       -h, --help
	      Display a help message, and then quit.

       -c CONFIG, --config=CONFIG
	      Config file to use (defaults to /etc/yum.conf).

       -a ARCH, --arch=ARCH
	      Act as if running the specified arch (default: current arch, note: does not override $releasever. x86_64 is a superset for i*86.).

       --source
	      Also download .src.rpm files.

       -r REPOID, --repoid=REPOID
	      Specify repo ids to query, can be specified multiple times (default is all enabled).

       -t, --tempcache
	      Use a temp dir for storing/accessing yum-cache.

       -p DESTDIR, --download_path=DESTDIR
	      Path to download packages to: defaults to current directory.

       -g, --gpgcheck
	      Remove packages that fail GPG signature checking after downloading.  exit status is '1' if at least one package was removed.

       -u, --urls
	      Just list urls of what would be downloaded, don't download.

       -l, --plugins
	      Enable yum plugin support.

       -n, --newest-only
	      Download only newest packages per-repo.

       -q, --quiet
	      Output as little information as possible.

EXAMPLES

       Sync all packages from the 'updates' repo to the current directory:
	       reposync --repoid=updates

       Sync only the newest packages from the 'updates' repo to the current directory:
	       reposync -n --repoid=updates

       Sync packages from the 'updates' and 'extras' repos to the current directory:
	       reposync --repoid=updates --repoid=extras

       Sync all packages from the 'updates' repo to the repos directory:
	       reposync -p repos --repoid=updates

       Sync  all packages from the 'updates' repo to the repos directory excluding x86_64 arch. Edit /etc/yum.conf adding option exclude=*.x86_64.
       Then:
	      reposync -p repos --repoid=updates

FILES

       reposync uses the yum libraries for retrieving information and packages. If no configuration file is specified, the default yum	configura-
       tion will be used.

       /etc/yum.conf
       /etc/yum/repos.d/

SEE ALSO

       yum.conf (5)
       http://yum.baseurl.org/

AUTHORS

       See the Authors file included with this program.

BUGS

       There  are  of  course no bugs, but should you find any, you should first consult the FAQ section on http://yum.baseurl.org/wiki/Faq and if
       unsuccessful in finding a resolution contact the mailing list: yum-devel@lists.baseurl.org.  To file a bug  use	http://bugzilla.redhat.com
       for Fedora/RHEL/Centos related bugs and http://yum.baseurl.org/report for all other bugs.

								   27 April 2007						       reposync(1)
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