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YUM is a package management system for Red Hat Enterprise Linux (RHEL), CentOS, Fedora, and other Red Hat-based Linux operating systems. It is command-line driven and is an easy tool you can use to keep your server updated and install any new software you need. Normally, when you perform updates, YUM will search the distribution’s [...]
Question: How do I remote software that I installed from my Linux dedicated server? Answer: The answer to that question depends on how you installed the software in the first place. Once you establish how and where the software has been installed, you can determine how to remove it. 1. Package Manager – Most software [...]
Question: I have a new Linux dedicated server, and I have read a lot of documentation referring to packages. What are Linux packages? Answer: In Linux distributions, a “package” refers to a compressed file archive containing all of the files that come with a particular application. The files are usually stored in the package according [...]
When you install perl applications on a server, they will invariably require you to install additional modules for support. This is part of the unfortunate reality of running perl applications. Typically, the required module names will be displayed like this, Date::Format or File::Tail. If you have ever tried to find the modules in your YUM [...]
Question: What are dependencies in Linux and how do I manage them? Answer: In any operating system, an program requires other programs, drivers, and libraries of files to run. The program depends on those files, so they are called dependencies. Many commercial vendors will packages the dependencies in the installation files of the software, but [...]
Question: How do I upgrade my CentOS installation to a higher version? Answer: Using YUM you can upgrade CentOS with only a few steps. 1. Backup your important data. If most or all of is in a database, make sure to backup all databases. 2. List all of the updates: # yum list updates 3. [...]
OpenVZ is a free and open source virtualization solution for Linux. Here is an easy guide to installing OpenVZ on Redhat Enterprise Linux, CentOS, or Fedora. Note: It is recommended that you use an ext2 or ext3 file system if you want per-container disk quota. 1. Add the OpenVZ YUM repository: # cd /etc/yum.repos.d # [...]
Nginx (pronounced “Engine X”) is a lightweight web server that offers speed and flexibility without all of the extra features that larger web servers like Apache offer. Although it is a free and open source application, CentOS does not offer the latest version in its default YUM repository. To install it, you need to add [...]
Question: Is there a way to tell YUM to ignore certain packages when performing updates on a CentOS Linux server? Answer: There certainly is, and in some cases it can save your server from an unfortunate mishap. When running a dedicated server, particularly one with multiple websites, you run the risk of alienating a particular [...]
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