0%
- 查询系统当前使用的内核:
uname -a
- 查询系统grub目录:
awk -F\' '$1=="menuentry " {print i++ " : " $2}' /boot/grub2/grub.cfg
1 2 3 4 5 6
|
awk -F\' '$1=="menuentry " {print i++ " : " $2}' /boot/grub2/grub.cfg > 0 : CentOS Linux (3.10.0-1062.1.1.el7.x86_64) 7 (Core) > 1 : CentOS Linux (3.10.0-1062.1.1.el7.x86_64) 7 (Core) with debugging > 2 : CentOS Linux (5.3.0-1.el7.elrepo.x86_64) 7 (Core) > 3 : CentOS Linux (5.3.0-1.el7.elrepo.x86_64) 7 (Core) with debugging > 4 : CentOS Linux 7 (Core), with Linux 0-rescue-bff8a0e97aa64c29b63d43defd9b317d
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- 设置新的启动项:
grub2-set-default 序号
,其中序号以0开始
- 验证:
grub2-editenv list
- 重启:
systemctl reboot