Install 7zip on Centos 6.4 (i686)

1. Add rpmforge repository
wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.i686.rpm
rpm -ivh rpmforge-release-0.5.2-2.el6.rf.i686.rpm
2. Install 7z
yum install p7zip
3. Extract file
7za x [7zfilename]
4. Compress
7za a -mx=9 7zfilename.7z [filename/directory]