Redhat - Yum

Yum is a package manager used by RPM based systems.

COMMANDDESCRIPTION
yum updateUpdate all RPM packages with YUM, also shows whats out of date.
yum update httpdUpdate individual packages, in this example HTTPD (Apache).
yum install packageInstall a package using YUM.
yum –exclude=package kernel* updateExclude a package from being updates with YUM.
yum remove packageRemove package with YUM.
yum erase packageRemove package with YUM.
yum list packageLists info about yum package.
yum provides httpdWhat a packages does, e.g Apache HTTPD Server.
yum info httpdShows package info, architecture, version etc.
yum localinstall blah.rpmUse YUM to install local RPM, settles deps from repo.
yum deplist packageShows deps for a package.
yum list installed | moreList all installed packages.
yum grouplist | moreShow all YUM groups.
yum groupinstall 'Development Tools'Install YUM group.