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	<title>Kerberos&#039; Web &#187; Server admin</title>
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	<link>http://k3rb.com/blog</link>
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		<title>Performance Tuning Apache Web Server &#8211; Enabled Modules</title>
		<link>http://k3rb.com/blog/2010/06/performance-tuning-apache-web-server-enabled-modules/</link>
		<comments>http://k3rb.com/blog/2010/06/performance-tuning-apache-web-server-enabled-modules/#comments</comments>
		<pubDate>Sun, 13 Jun 2010 14:34:28 +0000</pubDate>
		<dc:creator>Kerberos</dc:creator>
				<category><![CDATA[Server admin]]></category>
		<category><![CDATA[Web development]]></category>
		<category><![CDATA[Apache]]></category>
		<category><![CDATA[Performance tuning]]></category>

		<guid isPermaLink="false">http://k3rb.com/blog/?p=173</guid>
		<description><![CDATA[There are many different aspects to tuning Apache.  In this post, I will focus on tuning which modules are compiled into Apache and also dynamically enabled.  The more modules you have enabled, the more memory Apache will consume and the more processing it needs to perform; try to enable the minimum amount of [...]]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>How to unmount a disk drive in Ubuntu (device is busy)?</title>
		<link>http://k3rb.com/blog/2010/01/how-to-unmount-a-disk-drive-in-ubuntu-device-is-busy/</link>
		<comments>http://k3rb.com/blog/2010/01/how-to-unmount-a-disk-drive-in-ubuntu-device-is-busy/#comments</comments>
		<pubDate>Sun, 31 Jan 2010 13:32:40 +0000</pubDate>
		<dc:creator>Kerberos</dc:creator>
				<category><![CDATA[Server admin]]></category>
		<category><![CDATA[Ubuntu]]></category>
		<category><![CDATA[Unmount]]></category>

		<guid isPermaLink="false">http://k3rb.com/blog/?p=143</guid>
		<description><![CDATA[Unmounting disks in Ubuntu is a bit more challenging than it should be.  Say you have an external drive mounted on /media/disk.  Trying the standard
sudo umount /media/disk
will often result in an error such as
umount: /media/drive: device is busy.
It is advisable to check what files may be open on the drive with
lsof &#124; grep [...]]]></description>
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		<slash:comments>2</slash:comments>
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		<item>
		<title>Securely erase hard drive on Ubuntu (unrecoverable shred command)</title>
		<link>http://k3rb.com/blog/2010/01/securely-erase-hard-drive-on-ubuntu-unrecoverable-shred-command/</link>
		<comments>http://k3rb.com/blog/2010/01/securely-erase-hard-drive-on-ubuntu-unrecoverable-shred-command/#comments</comments>
		<pubDate>Sat, 30 Jan 2010 17:59:57 +0000</pubDate>
		<dc:creator>Kerberos</dc:creator>
				<category><![CDATA[Server admin]]></category>
		<category><![CDATA[Useful tools]]></category>
		<category><![CDATA[Security]]></category>

		<guid isPermaLink="false">http://k3rb.com/blog/?p=131</guid>
		<description><![CDATA[Did you ever want to securely erase a hard disk on your server so the data is unrecoverable?  Maybe you are selling the drive or the computer and want to be sure that no sensitive data can be recovered by a future owner.  Ubuntu has a command line tool for just that purpose. [...]]]></description>
		<wfw:commentRss>http://k3rb.com/blog/2010/01/securely-erase-hard-drive-on-ubuntu-unrecoverable-shred-command/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>&#8216;Shutdown&#8217; versus &#8216;poweroff&#8217; versus &#8216;halt&#8217; on Ubuntu server</title>
		<link>http://k3rb.com/blog/2009/12/shutdown-versus-poweroff-versus-halt-on-ubuntu-server/</link>
		<comments>http://k3rb.com/blog/2009/12/shutdown-versus-poweroff-versus-halt-on-ubuntu-server/#comments</comments>
		<pubDate>Mon, 28 Dec 2009 13:21:16 +0000</pubDate>
		<dc:creator>Kerberos</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[CLI]]></category>
		<category><![CDATA[Server admin]]></category>
		<category><![CDATA[Ubuntu]]></category>

		<guid isPermaLink="false">http://k3rb.com/blog/?p=120</guid>
		<description><![CDATA[There seems to be a lot of confusion around how to properly restart or shut down your server under Ubuntu.  The are several commands out there:  halt, shutdown, poweroff and reboot.  Which are the right ones to use and what are the differences?
Historically, halt, poweroff and reboot were fairly low-level commands that [...]]]></description>
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		<slash:comments>3</slash:comments>
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		<title>Linux guide to common server admin commands (mainly Ubuntu)</title>
		<link>http://k3rb.com/blog/2009/10/linux-guide-to-useful-server-admin-commands-mainly-ubuntu/</link>
		<comments>http://k3rb.com/blog/2009/10/linux-guide-to-useful-server-admin-commands-mainly-ubuntu/#comments</comments>
		<pubDate>Thu, 15 Oct 2009 04:26:27 +0000</pubDate>
		<dc:creator>Kerberos</dc:creator>
				<category><![CDATA[Server admin]]></category>
		<category><![CDATA[Useful tools]]></category>
		<category><![CDATA[CLI server commands]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[Ubuntu]]></category>

		<guid isPermaLink="false">http://k3rb.com/blog/?p=45</guid>
		<description><![CDATA[THIS POST IS STILL BEING COMPLETED IN SOME SECTIONS
I spend part of my time as a system admin for our servers.  Since I am fairly new to Linux, I assembled a guide of the most common CLI commands as a reference for myself.  I decided to share my command reference guide in case [...]]]></description>
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		<slash:comments>0</slash:comments>
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