用正确的工具,做正确的事情
mount -o loop /dev/cdrom /mnt/
[Local] name=CentOS-5.8.local baseurl=file:///mnt gpgcheck=0 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
yum clean all
yum install gcc
玩得开心!!!