如何使用 su 以该用户身份执行 bash 脚本的其余部分? [英] How do I use su to execute the rest of the bash script as that user?

问题描述

我编写了一个脚本，它将一个字符串作为参数，该字符串是用户名和项目的串联.该脚本应该根据项目字符串将 (su) 切换到用户名，将 cd 切换到特定目录.

I've written a script that takes, as an argument, a string that is a concatenation of a username and a project. The script is supposed to switch (su) to the username, cd to a specific directory based upon the project string.

我基本上想做:

su $USERNAME;  
cd /home/$USERNAME/$PROJECT;  
svn update;  

问题是一旦我做了一个 su... 它就在那里等着.这是有道理的，因为执行流程已经传递到切换到用户.一旦我退出，其余的事情就会执行，但不能按预期工作.

The problem is that once I do an su... it just waits there. Which makes sense since the flow of execution has passed to switching to the user. Once I exit, then the rest of the things execute but it doesn't work as desired.

我在 svn 命令前添加了 su 但命令失败(即它没有更新所需目录中的 svn).

I prepended su to the svn command but the command failed (i.e. it didn't update svn in the directory desired).

如何编写允许用户切换用户和调用 svn(除其他外)的脚本?

How do I write a script that allows the user to switch user and invoke svn (among other things)?

推荐答案

诀窍是使用sudo"命令而不是su"

The trick is to use "sudo" command instead of "su"

你可能需要添加这个

username1 ALL=(username2) NOPASSWD: /path/to/svn

到您的/etc/sudoers 文件

to your /etc/sudoers file

并将您的脚本更改为:

sudo -u username2 -H sh -c "cd /home/$USERNAME/$PROJECT; svn update" 

其中 username2 是您要运行 SVN 命令的用户，username1 是运行脚本的用户.

Where username2 is the user you want to run the SVN command as and username1 is the user running the script.

如果您需要多个用户来运行此脚本，请使用 %groupname 而不是 username1

If you need multiple users to run this script, use a %groupname instead of the username1

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