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centos linux忘记密码进行重置


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一.重启系统,进入 recovery 恢复模式
在读秒时候按e键,找到 linux16 行,按键盘End

末尾添加空格 rd.break console=tty0

按 ctrl + x 启动

二.以可写方式重新挂载 /sysroot,并切换到此环境
1 switch_root# mount  -o  remount,rw  /sysroot

2 switch_root# chroot  /sysroot

3 sh-3.2#

三. 将root用户的密码设置为 redhat
# echo  redhat  |  passwd  --stdin  root


# touch  /.autorelabel            //让  SElinux  失忆

# exit
switch_root# reboot 完成修复
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