CentOS Remove Old Kernels

Tonight when upgrading a CentOS Linux server it was noted by YUM that 15MB more disk space was needed to upgrade grub and the kernel itself. Below are four quick steps to verify what kernels are installed, install yum-utils if it is not installed already, delete previous kernels and set YUM to remove old kernels…

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Ubuntu Linux

Ubuntu 12.04 View Package Version

While working to verify some packages in Ubuntu 12.04 had backport patches installed properly I needed to list installed package versions. To do this you can install a package called apt-show-versions which will allow you to list all installed packages and their versions with ease. This likely works on most Ubuntu versions but was tested…

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