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Author Archives: alex

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Technology Insights

Error: Missing Dependency: cvsps is needed by package git-cvs-1.7.2.2-1.el5.rf.i386

InsightsBy alexSeptember 5, 2010Leave a comment

During an attempt to update Git on a CentOS Linux server via the Yum Package manager this evening I ran into a dependency error. The newer Git package has a dependency of Git-CVS package which also has a dependency of CVSPS package.  So initially when I installed Git it didn’t require these packages so I…

Technology Insights

Use Yum To List Available Packages In A Specific Repository On CentOS Linux

InsightsBy alexSeptember 4, 2010Leave a comment

The Yum, or Yellowdog Updater Modified, is a great package manager if you are familiar with how to use it. If you have a bunch of repositories activated it can be useful to know what packages are available via a specific repository. It is possible to install RPM packages via a specific repository which if…

Technology Insights

Secure /tmp And /var/tmp Directories On CentOS Linux

InsightsBy alexSeptember 3, 20109 Comments

A couple days ago a CentOS Linux server that I took over administration on had some mysterious files show up in the /tmp and /var/tmp directories. The files were placed in /tmp and /var/tmp by the apache user meaning there is some form of security hole in Apache, PHP, or one of the virtual hosts…

Technology Errors

iTunes Could Not Sync Calendars To The iPhone Because The Sync Server Failed

ErrorsBy alexSeptember 1, 2010244 Comments

I typically charge my iPhone using a USB cable that attaches to my computer but recently I have been using the wall charger because my computer wasn’t always close. After using the wall charger for a week or so without ever actually syncing my iPhone to iTunes on my Windows 7 computer I attempted to…

Technology Insights

Obtain Dell Express Service Code & Dell Service Tag From Dell Server Running Linux

InsightsBy alexAugust 30, 2010Leave a comment

I wrote a previous article about obtaining the BIOS version on a Dell Poweredge 650 server which had the end goal of updating the BIOS version on the server if a new BIOS version was available. So after obtaining the BIOS version of the Poweredge 650 server I needed the Dell Service Tag from the…

Technology Insights

Dell Poweredge 650: Determine BIOS Version From Linux

InsightsBy alexAugust 29, 2010Leave a comment

I have a development server, which is a Dell Poweredge 650, running CentOS Linux that is used for testing PostgreSQL database replication via log shipping and recently the server has been crashing after only running for a couple hours from a kernel panic. One of the things I wanted to verify is if there is…

Information Security

Disable PHP allow_url_fopen For Security Reasons

SecurityBy alexAugust 28, 2010Leave a comment

Recently I was doing a security audit on a Linux server and noticed some Apache and PHP items that needed to be modified to make the server more secure. One of the items that should be disabled is allow_url_fopen because the risk that it can be abused. The issue is that allow_url_fopen is on by…

Technology Insights

Play HD DVD’s On Windows 7 Using Xbox 360 HD DVD Player

InsightsBy alexAugust 27, 20102 Comments

The LCD TV in my office started having issues with the LCD screen a couple weeks ago so I had to take the TV in to get the screen replaced. Luckily the LCD panel happened to be under warranty or I would have been out $2200. Regardless though it left me without the TV in…

Technology Errors

Ubuntu Linux Upgrade: Could Not Find The Upgrade Application Archive, Exiting

ErrorsBy alexAugust 26, 2010Leave a comment

Yesterday we had to upgrade a Ubuntu Linux server from a really old version of Ubuntu to the latest and greatest version of Ubuntu. When attempting to run the upgrade from the command line from a file on a Ubuntu CD we were getting an error which is described in more detail below along with…

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