CentOS/RedHat/OracleLinux 7 系统更改内核启动顺序

grub2-editenv list
awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
grub2-set-default "Oracle Linux Server 7.9, with Unbreakable Enterprise Kernel 5.4.17-2136.336.5.1.el7uek.x86_64"
grub2-editenv list

grub2-editenv list
awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
grub2-set-default "Oracle Linux Server 7.9, with Linux 3.10.0-1160.119.1.0.5.el7.x86_64"
grub2-editenv list