Redhat Package Manager
rpm is a powerful Package Manager, which can be used to build, install,query, verify, update, and erase individual software packages. A pack-age consists of an archive of files and meta-data used to install and erase the archive files. The meta-data includes helper scripts, file attributes, and descriptive information about the package. Packages come in two varieties: binary packages, used to encapsulate software to be installed, and source packages, containing the source code and recipe necessary to produce binary packages.