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	<title>Infusion Technology Solutions Blog&#187; linux</title>
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	<link>http://blog.infusiontechsolutions.com</link>
	<description>Technology related solutions, tips, tricks, and other interesting topics</description>
	<lastBuildDate>Tue, 20 Apr 2010 15:07:03 +0000</lastBuildDate>
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		<title>Sendmail Hangs When Starting Up or When Using It with PHP</title>
		<link>http://blog.infusiontechsolutions.com/sendmail-hangs-when-starting-up-or-when-using-it-with-php/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=sendmail-hangs-when-starting-up-or-when-using-it-with-php</link>
		<comments>http://blog.infusiontechsolutions.com/sendmail-hangs-when-starting-up-or-when-using-it-with-php/#comments</comments>
		<pubDate>Mon, 02 Mar 2009 04:35:11 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[General IT Info]]></category>
		<category><![CDATA[boot]]></category>
		<category><![CDATA[centos]]></category>
		<category><![CDATA[dns lookup]]></category>
		<category><![CDATA[hang]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[php script]]></category>
		<category><![CDATA[redhat]]></category>
		<category><![CDATA[rhel]]></category>
		<category><![CDATA[sendmail]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/?p=239</guid>
		<description><![CDATA[If you notice Sendmail hanging up for many minutes while starting up at boot or while being used such as sending an email from a PHP script, it is probably a DNS lookup problem. Ensure your /etc/hosts file has the appropriate entries for your server that sendmail is running on: 127.0.0.1 localhost localhost.localdomain 192.168.1.80 www.foo.com [...]]]></description>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>How to Mirror A Directory Locally Using Rsync</title>
		<link>http://blog.infusiontechsolutions.com/how-to-mirror-a-directory-locally-using-rsync/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=how-to-mirror-a-directory-locally-using-rsync</link>
		<comments>http://blog.infusiontechsolutions.com/how-to-mirror-a-directory-locally-using-rsync/#comments</comments>
		<pubDate>Fri, 13 Feb 2009 03:55:56 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[General IT Info]]></category>
		<category><![CDATA[Tutorials]]></category>
		<category><![CDATA[Web Development]]></category>
		<category><![CDATA[backup]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[mirror]]></category>
		<category><![CDATA[rsync]]></category>
		<category><![CDATA[source directory]]></category>
		<category><![CDATA[sync]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/?p=229</guid>
		<description><![CDATA[Most of the instructions for mirroring a directory with Rsync involve mirroring the data to a different server. You can also use Rsync to sync or mirror a directory on the same computer as the source directory. Here is an example command on how to mirror two directories locally. In this example, /home/apache/public_html is the [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to Not Update a Package From a Specific Repository Using Yum</title>
		<link>http://blog.infusiontechsolutions.com/how-to-not-update-a-package-from-a-specific-repository-using-yum/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=how-to-not-update-a-package-from-a-specific-repository-using-yum</link>
		<comments>http://blog.infusiontechsolutions.com/how-to-not-update-a-package-from-a-specific-repository-using-yum/#comments</comments>
		<pubDate>Wed, 11 Feb 2009 01:54:36 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[General IT Info]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[repo]]></category>
		<category><![CDATA[repositories]]></category>
		<category><![CDATA[repository]]></category>
		<category><![CDATA[yum]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/?p=219</guid>
		<description><![CDATA[If you are using Yum to manage packages from multiple repositories it may be beneficial for you to not update a particular package against a specific repository in favor of another one. To do this, simply add the following line to the Yum configuration file for the repository you want to ignore: exclude=packageName1 packageName2 packageName3 [...]]]></description>
		<wfw:commentRss>http://blog.infusiontechsolutions.com/how-to-not-update-a-package-from-a-specific-repository-using-yum/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to Search for an Exact String With GREP</title>
		<link>http://blog.infusiontechsolutions.com/how-to-search-for-an-exact-string-with-grep/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=how-to-search-for-an-exact-string-with-grep</link>
		<comments>http://blog.infusiontechsolutions.com/how-to-search-for-an-exact-string-with-grep/#comments</comments>
		<pubDate>Mon, 19 Jan 2009 03:04:18 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[General IT Info]]></category>
		<category><![CDATA[command line switch]]></category>
		<category><![CDATA[exact string]]></category>
		<category><![CDATA[grep]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[maccommand cat]]></category>
		<category><![CDATA[operating system]]></category>
		<category><![CDATA[os x]]></category>
		<category><![CDATA[programs]]></category>
		<category><![CDATA[string username]]></category>
		<category><![CDATA[substring]]></category>
		<category><![CDATA[systems administration]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/?p=193</guid>
		<description><![CDATA[GREP is one of those simple UNIX programs that you can&#8217;t live without if you do any kind of systems administration of an operating system based on UNIX such as Linux or Mac OS X. If you need to search for an exact string and NOT just a substring, all you have to do is [...]]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to Block an IP Range with IPTables</title>
		<link>http://blog.infusiontechsolutions.com/how-to-block-an-ip-range-with-iptables/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=how-to-block-an-ip-range-with-iptables</link>
		<comments>http://blog.infusiontechsolutions.com/how-to-block-an-ip-range-with-iptables/#comments</comments>
		<pubDate>Sat, 23 Aug 2008 01:30:44 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Information Security]]></category>
		<category><![CDATA[block ip]]></category>
		<category><![CDATA[centos]]></category>
		<category><![CDATA[deny]]></category>
		<category><![CDATA[firewall]]></category>
		<category><![CDATA[ip range]]></category>
		<category><![CDATA[iptables]]></category>
		<category><![CDATA[iptables firewall]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[spammers]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/?p=164</guid>
		<description><![CDATA[If you want to block a range of IP addresses from accessing your CentOS server you can issue the following IPTables firewall command: /sbin/iptables -I INPUT -m iprange --src-range 192.168.1.1-192.168.1.2.100 -j DROP Replace &#8220;192.168.1.1-192.168.1.2.100&#8243; with the IP range you want to block. This command only works with the IPTables firewall so if your operating system [...]]]></description>
		<wfw:commentRss>http://blog.infusiontechsolutions.com/how-to-block-an-ip-range-with-iptables/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to Recursively chmod Directories or Files</title>
		<link>http://blog.infusiontechsolutions.com/how-to-recursively-chmod-directories-or-files/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=how-to-recursively-chmod-directories-or-files</link>
		<comments>http://blog.infusiontechsolutions.com/how-to-recursively-chmod-directories-or-files/#comments</comments>
		<pubDate>Fri, 06 Jun 2008 15:33:43 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[General IT Info]]></category>
		<category><![CDATA[chmod]]></category>
		<category><![CDATA[exec]]></category>
		<category><![CDATA[file extension]]></category>
		<category><![CDATA[find]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[maxosx]]></category>
		<category><![CDATA[osx]]></category>
		<category><![CDATA[php files]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/?p=157</guid>
		<description><![CDATA[Command to recursively chmod only directories: find . -type d -exec chmod 755 {} \; How to recursively set the execute bit on every directory: chmod -R a+X * The +X flag sets the execute bit on directories only How to recursively chmod only files: find . -type f -exec chmod 644 {} \; How [...]]]></description>
		<wfw:commentRss>http://blog.infusiontechsolutions.com/how-to-recursively-chmod-directories-or-files/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to Determine What Program Is Listening on a Port in OS X or Linux</title>
		<link>http://blog.infusiontechsolutions.com/how-to-determine-what-program-is-listening-on-a-port-in-os-x-or-linux/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=how-to-determine-what-program-is-listening-on-a-port-in-os-x-or-linux</link>
		<comments>http://blog.infusiontechsolutions.com/how-to-determine-what-program-is-listening-on-a-port-in-os-x-or-linux/#comments</comments>
		<pubDate>Thu, 13 Mar 2008 02:18:40 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Information Security]]></category>
		<category><![CDATA[10.4]]></category>
		<category><![CDATA[10.5]]></category>
		<category><![CDATA[forensics]]></category>
		<category><![CDATA[leopard]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[lsof]]></category>
		<category><![CDATA[macosx]]></category>
		<category><![CDATA[network]]></category>
		<category><![CDATA[os x]]></category>
		<category><![CDATA[osx]]></category>
		<category><![CDATA[tiger]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/how-to-determine-what-program-is-listening-on-a-port-in-os-x-or-linux/</guid>
		<description><![CDATA[To determine what daemon or program is listening on a port in Linux or OS X you can use the lsof command. You need to run the command while logged in as root or if your operating system supports sudo like OS X, you can use that. Command to run in Linux: lsof -i -nP [...]]]></description>
		<wfw:commentRss>http://blog.infusiontechsolutions.com/how-to-determine-what-program-is-listening-on-a-port-in-os-x-or-linux/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>OS X &#8211; How to Search For a Substring Inside of GZIP and BZ2 Files</title>
		<link>http://blog.infusiontechsolutions.com/os-x-how-to-search-for-a-substring-inside-of-gzip-and-bz2-files/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=os-x-how-to-search-for-a-substring-inside-of-gzip-and-bz2-files</link>
		<comments>http://blog.infusiontechsolutions.com/os-x-how-to-search-for-a-substring-inside-of-gzip-and-bz2-files/#comments</comments>
		<pubDate>Thu, 06 Mar 2008 03:15:33 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Apple]]></category>
		<category><![CDATA[General IT Info]]></category>
		<category><![CDATA[archive]]></category>
		<category><![CDATA[bz2]]></category>
		<category><![CDATA[bzgrep]]></category>
		<category><![CDATA[gzip]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[macosx]]></category>
		<category><![CDATA[os x]]></category>
		<category><![CDATA[osx]]></category>
		<category><![CDATA[search]]></category>
		<category><![CDATA[string]]></category>
		<category><![CDATA[substring]]></category>
		<category><![CDATA[terminal]]></category>
		<category><![CDATA[zgrep]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/os-x-how-to-search-for-a-substring-inside-of-gzip-and-bz2-files/</guid>
		<description><![CDATA[This tip is really a generic *Nix command so it should not only work in OS X but also in other flavors of UNIX such as Linux. In OS X a lot of the log files are auto-archived into compressed GZIP files in Tiger (Mac OS X 10.4) and BZ2 files in Leopard (Mac OS [...]]]></description>
		<wfw:commentRss>http://blog.infusiontechsolutions.com/os-x-how-to-search-for-a-substring-inside-of-gzip-and-bz2-files/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>VMWare Server Black Screen Problem</title>
		<link>http://blog.infusiontechsolutions.com/vmware-server-black-screen-problem/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=vmware-server-black-screen-problem</link>
		<comments>http://blog.infusiontechsolutions.com/vmware-server-black-screen-problem/#comments</comments>
		<pubDate>Mon, 07 Jan 2008 21:09:38 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[General IT Info]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[VMware]]></category>

		<guid isPermaLink="false">http://blog.infusiontechsolutions.com/vmware-server-black-screen-problem/</guid>
		<description><![CDATA[With the Linux version of VMware Server there is a bug where only the person that created a virtual machine can see its window in the VMware client program. Any other user on the server can log into the VMware server client but they will only see a black screen in the guest machine&#8217;s window. [...]]]></description>
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		<slash:comments>0</slash:comments>
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