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# 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.
Note on Fedora: install package "yum-plugin-fastestmirror" to always get the fastest mirror!. It comes with CentOS by default and is like http.debian.net and mirrors.ubuntu.com from Debian side of Linux family.
DO NOT RUN "yum update" NOR "yum upgrade" NOR ANYTHING ELSE WHICH UPGRADES PACKAGES BEFORE SETTING PRIORIZING!
```
yum install yum-plugin-fastestmirror
```
## 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.
### Fedora
First [enable RPM Fusion](http://rpmfusion.org/Configuration). Then
```
yum install VirtualBox-guest
```
and reboot.
## Enabling other repositories
For [EPEL](https://fedoraproject.org/wiki/EPEL) follow the first steps for Virtualbox guest additions installing above. Read also Fedora part above and enable RPM Fusion.
### RPMGforge
Download the [package](http://wiki.centos.org/AdditionalResources/Repositories/RPMForge#head-f0c3ecee3dbb407e4eed79a56ec0ae92d1398e01) and install it with
```
rpm -i
```
## Livna
[Livna is easy to enable. Just go to their homepage and follow their instructions](http://rpm.livna.org/)
### 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 all .repo files in /etc/yum.repos.d 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 be > 10 and other should be more preferred than other. I used
epel 10 rpmforge 11 rpmfusion 12 livna 12 (Livna provides only libdvdcss and other packages have been moved to rpmfusion.)
Now you should be able to safely run "yum check-update" and "yum update" or "yum upgrade".
If you have installed Fedora from Live-CD you probably want to instll LibreOffice with
```
yum groupinstall office
```
and if your native language isn't English e.g.
```
yum groupinstall finnish-support
```