rhel7 升级内核，保证grub2启动时为默认项目

rhel7 升级内核，保证grub2启动时为默认项目 [[email protected] ~]# uname-r 3.10.0-123.el7.x86_64 [[email protected] ~]#cd Downloads/ [[email protected] Downloads]# ls kernel-3.10.0-123.el7.x86_64.rpm [[email protected

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