sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set
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遇到这个问题说明当前用户没有sudo执行权限。
赋予sudo执行权限需要在root的模式下执行,系统默认禁用root账号,如果你的系统没有激活root,即无法切换到root账号,在使用su root命令时会报以下错误:
su:Authentication failure
这个时候我们可以用以下方式激活root:
ubuntu命令行->reboot重启->按esc进入->选择Advanced options for Ubuntu->选择recovery mode->选择root命令行模式
因为recovery模式默认是以只读模式挂载,所以我们要重新挂载切换到读写模式:
mount -o remount,rw /
mount --all
然后我们可以赋予sudo的执行权限:
chown root:root /usr/bin/sudo
chmod 4755 /usr/bin/sudo
然后重启系统:
reboot
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- sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set
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