11 Useful Yum Commands on CentOS Linux

Yum is the package management system that is used on CentOS Linux. It is responsible for managing packages and their dependencies from Yum repositories, as defined in /etc/yum.repos.d/ In this post, we'll cover a few common and useful yum commands: 1. Install a yum package: 2. Remove a yum package: 3. Reinstall a yum ...

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CentOS Linux Kernel Update 2.6.32-431.1.2 Released

CentOS Linux kernel 2.6.32-431.1.2 has just been released.  Update type(s): security, bug fix and enhancement CVEs: CVE-2013-2141 CVE-2013-4470 CVE-2013-6367 CVE-2013-6368 * A flaw was found in the way the Linux kernel's TCP/IP protocol suite implementation handled sending of certain UDP packets over sockets that used the UDP_CORK option when the UDP Fragmentation Offload (UFO) feature was enabled on the output device. ...

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iptables – restorecon: command not found

We have found reports of some people seeing a "restorecon: command not found" when attempting to start or save iptable rules. Example: iptables: Saving firewall rules to /etc/sysconfig/iptables: /etc/init.d/iptables: line 274: restorecon: command not found We have found this error on some CentOS 6 installations (virtualized.) This error is due to a missing package ...

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Enable EPEL Repo on CentOS 5, CentOS 6 and CentOS 7

What is the EPEL repo? The EPEL (Extra Packages for Enterprise Linux) yum repository is an excellent source for additional packages for CentOS. Instead of having to compile applications that aren't included in CentOS' built-in repositories from source, EPEL can be used. Install/enable the EPEL repo:  Disable the EPEL repo: Open /etc/yum.repos.d/epel.repo and set ...

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