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.
| show 2 more comments. up vote 0 down vote. I installed CentOS via Vagrant, and it came with the /etc/yum.repos.d/ directory prepopulated with things like puppet.repo. Lo and behold, puppet.repo and other included repos did not point to valid resources. So I removed them and yum works now.share | improve this answer.f you run yum update or yum upgrade without any other parameters all packages on your system including yum will be upgraded so there really is no need to upgrade yum on its own unless you are upgrading Fedora or CentOS versions. share | improve this answer.