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Full Discussion: RH V Centos
Operating Systems Linux Red Hat RH V Centos Post 302733443 by jabalv on Tuesday 20th of November 2012 01:43:57 PM
Old 11-20-2012
Yes mainly they use same kernel and packages.

As fpmurphy said pre-production environment should be the same.

I think you can use Centos only if you know what you doing, like if you know your services enough - what libs, lib versions they use and how use.

But also I don`t see why you need that depravity - use RHEL also on test environment?!
 

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package-cleanup(1)														package-cleanup(1)

NAME
package-cleanup - clean up locally installed, duplicate, or orphaned packages SYNOPSIS
package-cleanup [options] <item ...> DESCRIPTION
package-cleanup is a program for cleaning up the locally-installed RPMs. GENERAL OPTIONS
-c <config file> Use alternative config file (default is /etc/yum.conf). -h, --help Help; display a help message and then quit. -q, --quiet Print out nothing unnecessary. -v, --version Report program version and exit. -y Agree to anything asked. --leaves List leaf nodes in the local RPM database. Leaf nodes are RPMs that are not relied upon by any other RPM. --orphans List installed packages which are not available from currently configured repositories. This is identical to "yum list extras", which may provide better output. --oldkernels Remove old kernel and kernel-devel packages. --problems List dependency problems in the local RPM database. If any problems are found it will exit with an exit code of 1. --dupes Scan for duplicates in the local RPM database. --cleandupes Scan for duplicates in the local RPM database and clean out the older versions. --count <COUNT> Number of duplicate/kernel packages to keep on the system (default 2) LEAVES OPTIONS
--all When listing leaf nodes also list leaf nodes that are not libraries. --leaf-regex A package name that matches this regular expression will be considered a leaf. --exclude-devel When listing leaf nodes do not list development packages. --exclude-bin When listing leaf nodes do not list packages with files in bin directories. OLDKERNELS OPTIONS
--keepdevel Do not remove kernel-devel packages when removing kernels EXAMPLES
List all dependency problems: package-cleanup --problems List all packages that are not in any Yum repository: package-cleanup --orphans Remove old kernels keeping 3 and leaving old kernel-devel packages installed: package-cleanup --oldkernels --count=3 --keepdevel List all leaf packages with no files in a bin directory whose name begins with either 'perl' or 'python': package-cleanup --leaves --exclude-bin --leaf-regex="^(perl)|(python)" FILES
As package-cleanup uses YUM libraries for retrieving all the information, it relies on YUM configuration for its default values like which repositories to use. Consult YUM documentation for details: /etc/yum.conf /etc/yum/repos.d/ /var/cache/yum/ 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. Gijs Hollestelle 03 November 2005 package-cleanup(1)
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