After the Revolution. When Martha Ballard began her diary in 1785, the Revolutionary War had been over for just a year. The states, still a confederation and almost entirely agrarian, had a total population of under 4 million.
The Yellowdog Updater, Modified (YUM) is a libre and open-source command-line package-management utility for computers running the GNU/Linux operating system using the RPM Package Manager. Though YUM has a command-line interface, several other tools provide graphical user interfaces to YUM functionality.
Use DVD via yum command, just open /etc/yum.repos.d/CentOS-Media.repo and make sure enabled=1. To use this repo, put in your DVD and use it with the other repos too: yum --enablerepo=c5-media groupinstall Development Tools'.