Search for a package to be installed using yum search

If you don’t know the exact package name to be installed, use ‘yum search keyword’, which will search all the packages that matches the ‘keyword’ and display it.
The following examples searches the yum repository for all the packages that matches the keyword ‘firefox’ and lists the available packages.
# yum search firefox
Loaded plugins: langpacks, presto, refresh-packagekit
============== N/S Matched: firefox ======================
firefox.x86_64 : Mozilla Firefox Web browser
gnome-do-plugins-firefox.x86_64 : gnome-do-plugins for firefox
mozilla-firetray-firefox.x86_64 : System tray extension for firefox
mozilla-adblockplus.noarch : Adblocking extension for Mozilla Firefox
mozilla-noscript.noarch : JavaScript white list extension for Mozilla Firefox

Name and summary matches only, use "search all" for everything.