使用‘`visudo -x`选项后没有sudo

Question

visudo警告我语法错误，所以我没有做任何修改就退出了。我决定在/etc/sudoers.d中创建一个新文件。不幸的是，我没有对manfile概要给予足够的关注，并发布了sudo visudo -x /etc/sudoers.d/jupyter (正确的参数应该是-f而不是-x)。这导出了我的配置，而不是创建一个新文件，最终的结果不再是sudo。

1. 这是否可以恢复而不重新启动到恢复模式？
   • 这种方法没有为我工作(用的是海神)

2. 另外，visudo应该这样工作吗？(不是冷嘲热讽，而是为了保护用户，对吧？)Debian命令页声明它至少验证输入和输出文件是不一样的。但很明显，它没有检查出口目的地是否合适？

使用Debian 8(32位)

>>> /etc/sudoers.d/jupyter: syntax error near line 1 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 1 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 2 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 2 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 3 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 4 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 4 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 4 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 4 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 5 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 6 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 6 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 6 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 6 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 7 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 8 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 8 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 8 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 8 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 9 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 9 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 10 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 11 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 11 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 12 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 13 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 13 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 14 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 14 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 15 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 16 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 16 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 17 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 18 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 18 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 19 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 20 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 20 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 21 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 22 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 22 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 22 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 22 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 22 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 22 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 23 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 24 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 24 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 25 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 26 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 26 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 27 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 27 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 28 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 29 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 29 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 30 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 31 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 31 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 32 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 33 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 33 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 34 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 35 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 35 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 35 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 35 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 35 <<<
>>> /etc/sudoers.d/jupyter: syntax error near line 35 <<<
sudo: parse error in /etc/sudoers.d/jupyter near line 1
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin

Answer 1

如果您知道根密码，那么可以这样做。

$ su root
# rm /etc/sudoers.d/jupyter

如果处于编辑模式，visudo将验证sudo文件；您在导出模式下运行它.