one liner for lazy people 
find /etc/yum.repos.d -name "Rocky-*.repo" -exec sed -i 's/^mirrorlist=/#&/' {} \; -exec sed -i '/^#baseurl=/s/^#//' {} \;
one liner for lazy people 
find /etc/yum.repos.d -name "Rocky-*.repo" -exec sed -i 's/^mirrorlist=/#&/' {} \; -exec sed -i '/^#baseurl=/s/^#//' {} \;