如何检查是否在bash脚本以root身份运行 [英] How to check if running as root in a bash script

问题描述

我正在写需要root级别权限的脚本，我希望让这个如果脚本不以root身份运行，它只是呼应请以root身份运行。并退出。

I'm writing a script that requires root level permissions, and I want to make it so that if the script is not run as root, it simply echoes "Please run as root." and exits.

下面是一些伪code什么我要找：

Here's some pseudocode for what I'm looking for:

if (whoami != root)
  then echo "Please run as root"

  else (do stuff)
fi

exit

我最好的（干净和安全）怎么能做到这一点？谢谢！

How could I best (cleanly and securely) accomplish this? Thanks!

嗯，我只想澄清：在（做的东西）部分将涉及运行的命令，在-和自身需要根。所以运行它作为一个普通用户只想拿出一个错误。这只是为了顺利运行需要root命令的脚本，而不使用脚本中sudo的，我只是在寻找一些语法糖。

Ah, just to clarify: the (do stuff) part would involve running commands that in-and-of themselves require root. So running it as a normal user would just come up with an error. This is just meant to cleanly run a script that requires root commands, without using sudo inside the script, I'm just looking for some syntactic sugar.

推荐答案

一个几个答案已经给出，但现在看来，最好的方法是使用的是：

A few answers have been given, but it appears that the best method is to use is:

• 标识-u


• 如果以root身份运行，将返回0的ID。

这似乎是比其他方法更可靠，它似乎返回即使脚本通过须藤运行0的ID。

This appears to be more reliable than the other methods, and it seems that it return an id of 0 even if the script is run through sudo.

这篇关于如何检查是否在bash脚本以root身份运行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！