bash 用于编辑 /etc/sudoers 文件的正则表达式模式
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/10420713/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Regex pattern to edit /etc/sudoers file
提问by Satish
I want to remove (uncommnet #) wheel group in /etc/sudoers file so what would be the Regex pattern i should use?
我想删除 /etc/sudoers 文件中的（uncommnet #）轮组，那么我应该使用什么正则表达式模式？
#cat /etc/sudoers
....
....
## Allows members of the 'sys' group to run networking, software,
## service management apps and more.
# %sys ALL = NETWORKING, SOFTWARE, SERVICES, STORAGE, DELEGATING, PROCESSES, LOCATE, DRIVERS
## Allows people in group wheel to run all commands
# %wheel ALL=(ALL) ALL
## Same thing without a password
# %wheel ALL=(ALL) NOPASSWD: ALL
....
....
I want to remove # from following line.
我想从以下行中删除 #。
...
# %wheel ALL=(ALL) NOPASSWD: ALL
...
回答by Tim Pote
You shouldn't edit the /etc/sudoersfile with any sort of script. There's a reason for the visudocommand. Edits to the sudoersfile should be rare and well-controlled.
您不应该/etc/sudoers使用任何类型的脚本编辑文件。visudo命令是有原因的。对sudoers文件的编辑应该很少并且得到很好的控制。
That being said, if your editor for the visudocommand is vi, you can run something like :%s/^# %wheel/%wheel/to uncomment all of the lines what start with %wheel.
话虽如此，如果你的visudo命令编辑器是 vi，你可以运行类似的东西:%s/^# %wheel/%wheel/来取消所有以%wheel.
Or, if you reeeeeeally think it's necessary:
或者，如果您确实认为有必要：
sudo sed --in-place 's/^#\s*\(%wheel\s\+ALL=(ALL)\s\+NOPASSWD:\s\+ALL\)//' /etc/sudoers
Run it without the --in-placefirst to check the output. Use it at your own risk.
在没有第--in-place一个检查输出的情况下运行它。需要您自担风险使用它。
回答by tsh
No need to use sed. On centos you can simply create file at /etc/sudoers.d/
无需使用 sed。在centos上，您可以简单地在以下位置创建文件/etc/sudoers.d/
echo 'myuser ALL=(ALL) NOPASSWD: ALL' >> ./myuser
sudo chown root:root ./myuser
sudo mv ./myuser /etc/sudoers.d/
This will enable sudo without password for myuser. Check this for more information: https://unix.stackexchange.com/questions/375433/etc-sudoers-vs-etc-sudoers-d-file-for-enabling-sudo-for-a-user
这将启用无需密码的 sudo myuser。查看更多信息：https: //unix.stackexchange.com/questions/375433/etc-sudoers-vs-etc-sudoers-d-file-for-enabling-sudo-for-a-user
回答by Andrew Clark
The following should work:
以下应该工作：
sed -i 's/^#\s*\(%wheel\s*ALL=(ALL)\s*NOPASSWD:\s*ALL\)//' /etc/sudoers
