2018年09月12日 CentOS7修改默认内核启动顺序 查看已经安装的内核。cat /boot/grub2/grub.cfg |grep menuentry显示结果：if [ x"${feature_menuentry_id}" = xy ]; then menuentry_id_option="--id" menuentry_id_option=""export menuentry_id_optionmenuentry 'CentOS Linux (4.4.