如何获取如果程序是使用sudo运行用户的实际UID？ [英] How do I get the users real uid if the program is run with sudo?

问题描述

我运行需要root privledges，因此该计划与须藤运行，但它也需要知道用户正在运行它。 的getuid 和 geteuid 都返回根。我如何获得的实际用户的用户名（或UID）？

The program I am running needs root privledges and therefore is run with sudo, but it also needs to know what user is running it. getuid and geteuid both return root. How do I get the actual users username (or uid)?

谢谢！

推荐答案

须藤提供了一些环境变量，以帮助您准确这种情况下：

sudo provides some environment variables to help you with exactly this case:

   SUDO_UID        Set to the user ID of the user who invoked
                   sudo

   SUDO_USER       Set to the login of the user who invoked sudo

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