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+Cheatsheet for distributions using rpm
+
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+
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+[Sitemap](../../sitemap/sitemap.html)
+
+
+# My cheatsheet
+
+This is my cheatsheet for setting up distribution using rpm. I am more experienced with distributions using dpkg, so I need this a little in the beginning.
+
+## Installing Virtualbox guest additions
+
+Start by installing dkms from [EPEL](https://fedoraproject.org/wiki/EPEL#How_can_I_use_these_extra_packages.3F).
+
+```
+rpm -i
+yum install dkms
+yum groupinstall "Development Tools"
+yum install kernel-devel
+```
+
+Press HOST + D and cd to the mount point and run the Linux Additions installer.
+
+## Enabling other repositories
+
+For [EPEL](https://fedoraproject.org/wiki/EPEL) follow the first steps for Virtualbox guest additions installing above.
+
+### RPMGforge
+
+Download the [package](http://wiki.centos.org/AdditionalResources/Repositories/RPMForge#head-f0c3ecee3dbb407e4eed79a56ec0ae92d1398e01) and install it with
+
+```
+rpm -i
+```
+
+### yum-plugin-priorities
+
+Using multiple 3rd party repositories (EPEL, RPMforge) is dangerous so you must use priorities to be safe.
+
+```
+yum install yum-plugin-priorities
+```
+
+Ensure that it's enabled by looking at /etc/yum/pluginconf.d/priorities.conf . It should read
+
+```
+[main]
+enabled=1
+```
+
+Now the plugin should be working and you must assign priorities.
+
+Edit the following files:
+
+```
+/etc/yum/yum.repos.d/CentOS-Base.repo
+/etc/yum/yum.repos.d/epel.repo
+/etc/yum/yum.repos.d/epel-testing.repo
+/etc/yum/yum.repos.d/rpmforge.repo
+```
+
+and add
+
+```
+priority=X
+```
+
+to end of every section where X is replaced with actual priority.
+
+[CentOS wiki](http://wiki.centos.org/PackageManagement/Yum/Priorities) suggests the following priorities:
+
+CentOS-Base: everything is priority=1 except contrib priority=2
+
+Third party repositories (EPEL,rpmforge) should b > 10 and other should be more preferred than other. I used
+
+epel 10 rpmforge 11
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