sed -e 's!^metalink=!#metalink=!g' \
-e 's!^#baseurl=!baseurl=!g' \
-e 's!//download\.example/pub!//mirrors.sjtug.sjtu.edu.cn!g' \
-e 's!http://mirrors\.sjtug!https://mirrors.sjtug!g' \
-i /etc/yum.repos.d/fedora-modular.repo \
/etc/yum.repos.d/fedora.repo \
/etc/yum.repos.d/fedora-updates-modular.repo \
/etc/yum.repos.d/fedora-updates.repo \
/etc/yum.repos.d/fedora-updates-testing-modular.repo \
/etc/yum.repos.d/fedora-updates-testing.repo
dnf install libvirt qemu-kvm qemu-system-x86