sudo bang bang到底是什么? [英] What exactly is sudo bang bang?

问题描述

sudo bang bang(sudo !!)的作用是什么，什么时候需要使用它?

What is the purpose of sudo bang bang (sudo !!) and when might one need to use it?

推荐答案

爆炸(!!)命令是重复您在终端中输入的上一个命令的快捷方式.当您忘记了需要管理员权限才能执行某项操作时，此命令非常有用，只需键入以下内容即可让您以超级用户权限重复该操作

The bang bang (!!) command is a shortcut to repeat the previous command you entered in your terminal. This command is very useful when you forget that you need admin rights to make a certain action, and lets you repeat it with super-user rights just by typing

sudo !!

而不是向上箭头键，滚动到该行的开头，添加sudo并按Enter键(想象通过那些 loooong apt-get命令滚动).获得了这么多秒！ 是的！

instead of typing arrow-up, scrolling to the beginning of the line, adding sudo and hitting enter (imagine scrolling through those loooong apt-get commands). So many seconds gained! Yay!

还有许多其他爆炸命令，例如!x，!?x，!!:p和!!*.此博客文章列出了它们并解释了什么他们是为了.

There are many other bang-commands such as !x, !?x, !!:p and !!*. This blog post lists them and explains what they are for.

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