08-31-2012
CentOS is the closest thing to RHEL without using RHEL. Their forum is also very good. They will help you if you need help and are friendly. A lot of there documentation is Red Hat documentation. Many places use CentOS in there test lab or as a secondary server. For example the one of 2 LDAP servers might be a RHEL box and the other is a CentOS server.
And Yes you should learn RHEL.
I hope this helps.
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LEARN ABOUT CENTOS
repo-rss
repo-rss(1) repo-rss(1)
NAME
repo-rss - generates an RSS feed from one or more Yum repositories
SYNOPSIS
repo-rss [options] repoid1 [repoid2...]
DESCRIPTION
repo-rss is a program for generating RSS feeds for one or more Yum repositories.
GENERAL OPTIONS
-h, --help
Help; display a help message and then quit.
-f <file>
Specify the file to which the RSS will be written. Default is repo-rss.xml.
-l <link>
Specify the URL to the RSS feed. Default is http://yum.baseurl.org/.
-t <title>
Specify the title for the RSS feed. Default is "RSS Repository - Recent Packages".
-d <description>
Specify the description of the RSS feed. Default is "Most recent packages in Repositories".
-r <days>
Specify the number of days to consider most recent. Default is 3.
--tempcache
Enable the use of a temporary directory for the yum cache. This is enabled by default for non-root users.
EXAMPLES
Generate an RSS for the updates-released repository and save it as updates-release.xml:
repo-rss -f updates-released.xml updates-released
FILES
As repo-rss uses YUM libraries for retrieving all the information, it relies on YUM configuration for its default values like which reposi-
tories 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.
Seth Vidal 2005 repo-rss(1)