IMPORTANT!!!! In reviewing my code I noted a few mistakes in my paths for the last two repos. I had looked at the first repo after the script and it looked fine. I should have looked at the others. If you alread ran the script, as root simply copy the backup repos back to the proper folder, delete the backup repos and the backup folder, then run the new script below (as I indicated, the only changes are to the paths for the last two sed commands). #beginning of script #backing up original repos mkdir ~/repo.bak cp /etc/yum.repos.d/fedora-core.repo ~/repo.bak/ cp /etc/yum.repos.d/fedora-extras.repo ~/repo.bak/ cp /etc/yum.repos.d/fedora-updates.repo ~/repo.bak/ cp /etc/yum.repos.d/fedora-updates-testing.repo ~/repo.bak/ #modifying fedora-core.repo sed 's/fedora.redhat.com\/download\/mirrors\/fedora-core-$releasever/mirrors.fedoraproject.org\/mirrorlist?repo=core-$releasever$arch=$basearch/' ~/repo.bak/fedora-core.repo > /etc/yum.repos.d/fedora-core.repo #modifying fedora-extras.repo sed 's/fedora.redhat.com\/download\/mirrors\/fedora-extras-$releasever/mirrors.fedoraproject.org\/mirrorlist?repo=extras-$releasever$arch=$basearch/' ~/repo.bak/fedora-extras.repo > /etc/yum.repos.d/fedora-updates.repo > /etc/yum.repos.d/fedora-extras.repo #modifying fedora-updates.repo sed 's/fedora.redhat.com\/download\/mirrors\/updates-released-fc$releasever/mirrors.fedoraproject.org\/mirrorlist?repo=updates-released-$releasever$arch=$basearch/' ~/repo.bak/fedora-updates.repo > /etc/yum.repos.d/fedora-updates.repo #modifying fedora-updates-testing.repo sed 's/fedora.redhat.com\/download\/mirrors\/updates-testing-fc$releasever/mirrors.fedoraproject.org\/mirrorlist?repo=updates-testing-$releasever$arch=$basearch/' ~/repo.bak/fedora-updates-testing.repo > /etc/yum.repos.d/fedora-updates-testing.repo