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<channel>
	<title>Marc Abramowitz &#187; RHEL</title>
	<atom:link href="http://marc-abramowitz.com/archives/category/computers/software/unix/linux/rhel/feed/" rel="self" type="application/rss+xml" />
	<link>http://marc-abramowitz.com</link>
	<description>Rocking the blogosphere</description>
	<lastBuildDate>Fri, 19 Feb 2010 06:01:16 +0000</lastBuildDate>
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			<item>
		<title>Mounting UFS partitions in Linux</title>
		<link>http://marc-abramowitz.com/archives/2007/03/02/mounting-ufs-partitions-in-linux/</link>
		<comments>http://marc-abramowitz.com/archives/2007/03/02/mounting-ufs-partitions-in-linux/#comments</comments>
		<pubDate>Fri, 02 Mar 2007 08:18:42 +0000</pubDate>
		<dc:creator>Marc</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[RHEL]]></category>

		<guid isPermaLink="false">http://marc.abramowitz.info/archives/2007/03/02/mounting-ufs-partitions-in-linux/</guid>
		<description><![CDATA[My desktop machine at work is now running RHEL 4, but before that it ran FreeBSD 4.10 for a number of years and had three hard drives with UFS filesystems. When my box was converted over to Linux, I backed up the critical files on the main hard drive and then reformatted the drive with [...]]]></description>
			<content:encoded><![CDATA[<p>My desktop machine at work is now running RHEL 4, but before that it ran FreeBSD 4.10 for a number of years and had three hard drives with <a href="http://en.wikipedia.org/wiki/Unix_File_System">UFS</a> filesystems. When my box was converted over to Linux, I backed up the critical files on the main hard drive and then reformatted the drive with ext3. The other two hard drives with UFS filesystems sat there collecting dust, which was unfortunate, because I could use the disk space. Today, I decided to mount the UFS partitions and look through the files and see if there&#8217;s anything worth keeping, before formatting these drives for Linux and getting myself a whole lot more disk space. Here&#8217;s how I did it.</p>
<p>The first task was to build the UFS kernel module, as my kernel did not have UFS support built-in, nor did my install have the UFS kernel module available. Already, having installed the proper kernel-devel RPM a while back, I did the following:</p>
<pre>
$ uname -r
2.6.9-34.0.2.ELsmp
$ rpm -qa | grep kernel-devel
kernel-devel-2.6.9-34.0.2.EL
$ cd ~/rpm/BUILD/kernel-2.6.9/linux-2.6.9
$ make menuconfig
$ make modules
$ make modules_install
$ depmod
$ sudo modprobe ufs
</pre>
<p>At this point, I had built the UFS kernel module and loaded it. Now it was time to mount the filesystems.</p>
<pre>
$ sudo mkdir /mnt/hdc1 /mnt/hdd1
$ sudo mount -t ufs -o ufstype=44bsd,ro /dev/hdc1 /mnt/hdc1
$ sudo mount -t ufs -o ufstype=44bsd,ro /dev/hdd1 /mnt/hdd1
</pre>
<p>That&#8217;s it! I now had read-only access to my two UFS partitions. Now I have to look through these files and see what&#8217;s worth keeping.</p>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Non-functioning Alt key in qemu-0.8.2 displayed to X11.app</title>
		<link>http://marc-abramowitz.com/archives/2006/12/19/non-functioning-alt-key-in-qemu-082-displayed-to-x11app/</link>
		<comments>http://marc-abramowitz.com/archives/2006/12/19/non-functioning-alt-key-in-qemu-082-displayed-to-x11app/#comments</comments>
		<pubDate>Wed, 20 Dec 2006 03:07:32 +0000</pubDate>
		<dc:creator>Marc</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[Open source]]></category>
		<category><![CDATA[RHEL]]></category>
		<category><![CDATA[Software]]></category>

		<guid isPermaLink="false">http://marc.abramowitz.info/archives/2006/12/19/non-functioning-alt-key-in-qemu-082-displayed-to-x11app/</guid>
		<description><![CDATA[The Alt key on my US English keyboard going to OS X X11.app going to qemu-0.8.2 (using my own qemu-0.8.2 RHEL 4 package) on my RHEL 4 Linux box is not happening. Instead, this is spewed to the console.

Warning: no scancode found for keysym 310

Strange, since xev sees the keypress just fine:

KeyPress event, serial 24, [...]]]></description>
			<content:encoded><![CDATA[<p>The Alt key on my US English keyboard going to OS X X11.app going to qemu-0.8.2 (using <a href="/archives/2006/12/19/rhel4-qemu-082-package/">my own qemu-0.8.2 RHEL 4 package</a>) on my RHEL 4 Linux box is not happening. Instead, this is spewed to the console.</p>
<pre>
Warning: no scancode found for keysym 310
</pre>
<p>Strange, since <code>xev</code> sees the keypress just fine:</p>
<pre>
KeyPress event, serial 24, synthetic NO, window 0x1000001,
    root 0x57, subw 0x0, time 411185488, (11,-16), root:(31,48),
    state 0x0, keycode 66 (keysym 0xffe7, Meta_L), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False
</pre>
<p>I don&#8217;t know why the keysym reported by qemu doesn&#8217;t match the keysym reported by xev. I&#8217;m guessing that it has something to do with the fact that <a href="http://qemu.org/">qemu</a> uses <a href="http://www.libsdl.org/index.php">SDL</a>, which probably has its own keymap routines, that are apart from the X11 routines.</p>
<p>Technorati tags: <a href="http://technorati.com/tag/linux">linux</a>, <a href="http://technorati.com/tag/qemu">qemu</a>, <a href="http://technorati.com/tag/virtualization">virtualization</a>,  <a href="http://technorati.com/tag/rhel">rhel</a></p>
]]></content:encoded>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>RHEL4 qemu-0.8.2 package</title>
		<link>http://marc-abramowitz.com/archives/2006/12/19/rhel4-qemu-082-package/</link>
		<comments>http://marc-abramowitz.com/archives/2006/12/19/rhel4-qemu-082-package/#comments</comments>
		<pubDate>Wed, 20 Dec 2006 01:53:15 +0000</pubDate>
		<dc:creator>Marc</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[Open source]]></category>
		<category><![CDATA[RHEL]]></category>
		<category><![CDATA[Software]]></category>

		<guid isPermaLink="false">http://marc.abramowitz.info/archives/2006/12/19/rhel4-qemu-082-package/</guid>
		<description><![CDATA[The following RPMs were built by downloading the 0.8.0 source RPMs from rpmforge, making a few minor mods, and then rebuilding:
Binary packages:

qemu-0.8.2-1.1.el4.marc.i386.rpm
qemu-debuginfo-0.8.2-1.1.el4.marc.i386.rpm

Source package:

qemu-0.8.2-1.1.el4.marc.src.rpm

Public key for checking signatures:

rpm-gpg-key.asc

Technorati tags: linux, qemu, virtualization,  rhel
]]></description>
			<content:encoded><![CDATA[<p>The following RPMs were built by downloading the 0.8.0 source RPMs from rpmforge, making a few minor mods, and then rebuilding:</p>
<p>Binary packages:</p>
<ul>
<li><a href="/download/linux/redhat/rhel/rhel4/RPMS/i386/qemu-0.8.2-1.1.el4.marc.i386.rpm">qemu-0.8.2-1.1.el4.marc.i386.rpm</a></li>
<li><a href="/download/linux/redhat/rhel/rhel4/RPMS/i386/qemu-debuginfo-0.8.2-1.1.el4.marc.i386.rpm">qemu-debuginfo-0.8.2-1.1.el4.marc.i386.rpm</a></li>
</ul>
<p>Source package:</p>
<ul>
<li><a href="/download/linux/redhat/rhel/rhel4/SRPMS/qemu-0.8.2-1.1.el4.marc.src.rpm">qemu-0.8.2-1.1.el4.marc.src.rpm</a></li>
</ul>
<p>Public key for checking signatures:</p>
<ul>
<li><a href="/download/linux/redhat/rhel/rpm-gpg-key.asc">rpm-gpg-key.asc</a></li>
</ul>
<p>Technorati tags: <a href="http://technorati.com/tag/linux">linux</a>, <a href="http://technorati.com/tag/qemu">qemu</a>, <a href="http://technorati.com/tag/virtualization">virtualization</a>,  <a href="http://technorati.com/tag/rhel">rhel</a></p>
]]></content:encoded>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>links for 2006-12-17</title>
		<link>http://marc-abramowitz.com/archives/2006/12/17/links-for-2006-12-17/</link>
		<comments>http://marc-abramowitz.com/archives/2006/12/17/links-for-2006-12-17/#comments</comments>
		<pubDate>Sun, 17 Dec 2006 13:17:41 +0000</pubDate>
		<dc:creator>Marc</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[Open source]]></category>
		<category><![CDATA[RHEL]]></category>
		<category><![CDATA[Software]]></category>

		<guid isPermaLink="false">http://marc.abramowitz.info/archives/2006/12/17/links-for-2006-12-17/</guid>
		<description><![CDATA[

Maximum RPM
An old but popular source for info about RPM; dead tree version
(tags: rpm linux howto redhat sysadmin book)


UML Execution Modes
Some of the only informative and concise info that I could find on the new SKAS0 support in UML that allows you to use an unpatched host kernel but get better security and performance than [...]]]></description>
			<content:encoded><![CDATA[<ul class="delicious">
<li>
<div class="delicious-link"><a href="http://www.rpm.org/max-rpm/">Maximum RPM</a></div>
<div class="delicious-extended">An old but popular source for info about <a href="http://en.wikipedia.org/wiki/RPM_Package_Manager">RPM</a>; <a href="http://www.amazon.com/gp/product/0672311054/104-4071214-7291146?ie=UTF8&#038;tag=marcsepinion-20&#038;linkCode=xm2&#038;camp=1789&#038;creativeASIN=0672311054">dead tree version</a></div>
<div class="delicious-tags">(tags: <a href="http://del.icio.us/msabramo/rpm">rpm</a> <a href="http://del.icio.us/msabramo/linux">linux</a> <a href="http://del.icio.us/msabramo/howto">howto</a> <a href="http://del.icio.us/msabramo/redhat">redhat</a> <a href="http://del.icio.us/msabramo/sysadmin">sysadmin</a> <a href="http://del.icio.us/msabramo/book">book</a>)</div>
</li>
<li>
<div class="delicious-link"><a href="http://80.71.248.82/uml/0131865056/ch09lev1sec2.html">UML Execution Modes</a></div>
<div class="delicious-extended">Some of the only informative and concise info that I could find on the new <a href="http://marc.abramowitz.info/archives/2006/12/16/user-mode-linux-skas0-poorly-documented/">SKAS0</a> support in UML that allows you to use an unpatched host kernel but get better security and performance than with TT mode.</div>
<div class="delicious-tags">(tags: <a href="http://del.icio.us/msabramo/uml">uml</a> <a href="http://del.icio.us/msabramo/linux">linux</a> <a href="http://del.icio.us/msabramo/tt">tt</a> <a href="http://del.icio.us/msabramo/skas">skas</a> <a href="http://del.icio.us/msabramo/skas0">skas0</a> <a href="http://del.icio.us/msabramo/skas3">skas3</a>)</div>
</li>
<li>
<div class="delicious-link"><a href="http://80.71.248.82/uml/">uml.chm</a></div>
<div class="delicious-extended"><a href="http://www.amazon.com/gp/product/0131865056/104-4071214-7291146?ie=UTF8&#038;tag=marcsepinion-20&#038;linkCode=xm2&#038;camp=1789&#038;creativeASIN=0131865056">&#8220;User Mode Linux&#8221; book from Jeff Dike</a>. I&#8217;m going to browse this and buy it if it looks good</div>
<div class="delicious-tags">(tags: <a href="http://del.icio.us/msabramo/uml">uml</a> <a href="http://del.icio.us/msabramo/linux">linux</a> <a href="http://del.icio.us/msabramo/book">book</a>)</div>
</li>
</ul>
<p>Technorati tags: <a href="http://technorati.com/tag/linux">linux</a>, <a href="http://technorati.com/tag/rpm">rpm</a>, <a href="http://technorati.com/tag/redhat">redhat</a>, <a href="http://technorati.com/tag/usermodelinux">usermodelinux</a></p>
]]></content:encoded>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Installing NX Server Free Edition: Workaround for .ssh/config permissions error</title>
		<link>http://marc-abramowitz.com/archives/2006/12/15/installing-nx-server-free-edition-workaround-for-sshconfig-permissions-error/</link>
		<comments>http://marc-abramowitz.com/archives/2006/12/15/installing-nx-server-free-edition-workaround-for-sshconfig-permissions-error/#comments</comments>
		<pubDate>Sat, 16 Dec 2006 01:37:03 +0000</pubDate>
		<dc:creator>Marc</dc:creator>
				<category><![CDATA[Debian]]></category>
		<category><![CDATA[Linux]]></category>
		<category><![CDATA[RHEL]]></category>
		<category><![CDATA[Software]]></category>
		<category><![CDATA[Ubuntu]]></category>

		<guid isPermaLink="false">http://marc.abramowitz.info/archives/2006/12/15/installing-nx-server-free-edition-workaround-for-sshconfig-permissions-error/</guid>
		<description><![CDATA[In the past 24 hours, I installed NX Free Edition on two Linux machines &#8211; one RHEL 4 and one Ubuntu and on both, the installation failed with this message in /usr/NX/var/log/install:

NX> 700 WARNING: Error when trying to connect to NX server, error is:
NX> 700 WARNING: NX> 203 NXSSH running with pid: 28823^M
Bad owner or [...]]]></description>
			<content:encoded><![CDATA[<p>In the past 24 hours, I installed <a href="http://www.nomachine.com/select-package.php?os=linux&#038;id=1">NX Free Edition</a> on two Linux machines &#8211; one RHEL 4 and one Ubuntu and on both, the installation failed with this message in <code>/usr/NX/var/log/install</code>:</p>
<pre>
NX> 700 WARNING: Error when trying to connect to NX server, error is:
NX> 700 WARNING: NX> 203 NXSSH running with pid: 28823^M
Bad owner or permissions on /home/marca/.ssh/config^M.
NX> 700 WARNING: nxsetup cannot validate the sanity of the current installation:
NX> 700 WARNING: the current system or NX configuration could be broken.
</pre>
<p>I tried chmodding <code>~/.ssh</code> and <code>~/.ssh/config</code> to be more and less restrictive and could not get the message to go away. What does work however is if I temporarily rename my config file to _config, install NX, and then rename it back.</p>
<p>Hopefully, <a href="http://www.nomachine.com/">NoMachine</a> will add this to their <a href="http://www.nomachine.com/ar/index.php">FAQs</a> and perhaps see if there&#8217;s a bug in the install that should be fixed.</p>
<p><a href="http://en.wikipedia.org/wiki/NX_technology">NX</a> is great though. You should definitely check it out if you&#8217;re into remote administration and using something like VNC, RDP, or remote X11, which are much slower than NX.</p>
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		</item>
		<item>
		<title>Doing RHELatively better</title>
		<link>http://marc-abramowitz.com/archives/2006/12/13/doing-rhelatively-better/</link>
		<comments>http://marc-abramowitz.com/archives/2006/12/13/doing-rhelatively-better/#comments</comments>
		<pubDate>Wed, 13 Dec 2006 22:50:09 +0000</pubDate>
		<dc:creator>Marc</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[RHEL]]></category>

		<guid isPermaLink="false">http://marc.abramowitz.info/archives/2006/12/13/doing-rhelatively-better/</guid>
		<description><![CDATA[Well, I got courier-imap working last night so I can read mail and today (though now I want to switch to Cyrus) I set up apt-rpm to work with rpmforge and now I&#8217;m working on getting yum working, since that seems to be the preferred tool in the RPM world.
]]></description>
			<content:encoded><![CDATA[<p>Well, I got <a href="http://www.courier-mta.org/imap/">courier-imap</a> working last night so I can read mail and today (though now I want to switch to <a href="http://cyrusimap.web.cmu.edu//">Cyrus</a>) I set up <a href="http://en.wikipedia.org/wiki/Apt-rpm">apt-rpm</a> to work with <a href="http://rpmforge.net/">rpmforge</a> and now I&#8217;m working on getting <a href="http://en.wikipedia.org/wiki/Yellow_dog_Updater%2C_Modified">yum</a> working, since that seems to be the preferred tool in the RPM world.</p>
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		</item>
		<item>
		<title>Courier IMAP working on RHEL</title>
		<link>http://marc-abramowitz.com/archives/2006/12/13/courier-imap-working-on-rhel/</link>
		<comments>http://marc-abramowitz.com/archives/2006/12/13/courier-imap-working-on-rhel/#comments</comments>
		<pubDate>Wed, 13 Dec 2006 08:16:25 +0000</pubDate>
		<dc:creator>Marc</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[Open source]]></category>
		<category><![CDATA[RHEL]]></category>
		<category><![CDATA[Software]]></category>

		<guid isPermaLink="false">http://marc.abramowitz.info/archives/2006/12/13/courier-imap-working-on-rhel/</guid>
		<description><![CDATA[Well, after a bit of frustration, I finally got the courier-imap package installed on RHEL and I had the IMAP server running, but I wasn&#8217;t able to successfully authenticate with it. Eventually, I realized that I had forgotten to start the courier authdaemon:
sudo /etc/init.d/courier-authlib start
Bam. Then things started working. Duh.
I also had to do two [...]]]></description>
			<content:encoded><![CDATA[<p>Well, after <a href="http://marc.abramowitz.info/archives/2006/12/12/struggling-with-rhel/">a bit of frustration</a>, I finally got the courier-imap package installed on RHEL and I had the IMAP server running, but I wasn&#8217;t able to successfully authenticate with it. Eventually, I realized that I had forgotten to start the courier authdaemon:</p>
<p><code>sudo /etc/init.d/courier-authlib start</code></p>
<p>Bam. Then things started working. Duh.</p>
<p>I also had to do two small tweaks to my <code>.fetchmailrc</code> &#8211; basically <code>formail</code> and <code>procmail</code> are now in <code>/usr/bin</code> instead of <code>/usr/local/bin</code>.</p>
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		</item>
		<item>
		<title>Struggling with RHEL</title>
		<link>http://marc-abramowitz.com/archives/2006/12/12/struggling-with-rhel/</link>
		<comments>http://marc-abramowitz.com/archives/2006/12/12/struggling-with-rhel/#comments</comments>
		<pubDate>Wed, 13 Dec 2006 02:18:43 +0000</pubDate>
		<dc:creator>Marc</dc:creator>
				<category><![CDATA[Linux]]></category>
		<category><![CDATA[RHEL]]></category>

		<guid isPermaLink="false">http://marc.abramowitz.info/archives/2006/12/12/struggling-with-rhel/</guid>
		<description><![CDATA[At work, I just converted my FreeBSD 4.11 box to RHEL 4.0U3.
It&#8217;s been quite a pain as I used my FreeBSD box as an IMAP server, using courier-imap, and now I have to build courier-imap for RHEL, as it doesn&#8217;t seem to be supported by Red Hat.
This is supposed to be easy &#8211; supposedly you [...]]]></description>
			<content:encoded><![CDATA[<p>At work, I just converted my <a href="http://www.freebsd.org/">FreeBSD</a> 4.11 box to <a href="http://www.redhat.com/rhel/">RHEL</a> 4.0U3.</p>
<p>It&#8217;s been quite a pain as I used my FreeBSD box as an IMAP server, using <a href="http://www.courier-mta.org/imap/">courier-imap</a>, and now I have to build courier-imap for RHEL, as it doesn&#8217;t seem to be supported by Red Hat.</p>
<p>This is <a href="http://www.courier-mta.org/?FAQ.html~rpm">supposed to be easy</a> &#8211; supposedly you can just download the .tar.bz2 file and then run <code>rpmbuild -ta</code> on it. However, this led to a few hours of resolving dependencies, fixing the completely broken gcc and g++ that came with my image, and trying to figure out how our in-house packaging tool interacts with rpm, yum, up2date, and a bazillion scattered files and directories. I also had a <a href="http://atrpms.net/install.html">few diversions where I looked into getting yum and apt-get going</a>, with the latter now seemingly working with one repository (<a href="http://atrpms.net/">ATrpms</a>), but I&#8217;m afraid to use it.</p>
<p>I wish I could use something like Ubuntu for my desktop machine. RHEL doesn&#8217;t have the best selection of packages and I prefer apt over rpm. Hopefully, I&#8217;ll get more comfortable with it over time, but right now I&#8217;m really wishing that I had Ubuntu or Debian or Gentoo. </p>
<p>And now that I&#8217;ve mentioned Gentoo, I <b>know</b> that I&#8217;m going to get a great rant from <a href="http://xblog.xman.org/">Chris</a> on RHEL suckage&#8230; <img src='http://marc-abramowitz.com/wp-includes/images/smilies/icon_smile.gif' alt=':-)' class='wp-smiley' /> </p>
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