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.
Several of the package managers offer graphical front-ends, contain search capabilities, allow updates to be installed from remote locations, and provide E-mail notifications when new packages are available. One package manager that provides all of these capabilities is YUM (YellowDog Updater Modified). This article will provide an introduction to package management with yum, and will show how a server that uses yum can be configured to generate E-mail notification when new packages are available for a server.