bash 脚本中的源文件 [英] Source files in a bash script

问题描述

我正在使用两个相邻版本的 ROS.要使用一个，我必须为特定版本提供一些环境变量.我想创建一个执行此操作的脚本.但是如果我创建一个像下面这样的脚本，变量没有设置，它们可能是在子shell中设置的.如何将文件提供给主终端 shell?

I am using two versions of ROS next to each other. To use one I have to source some environment variables for the specific version. I would like to create a script that does this. But if I create a script like below the variables are not set, they are probably set in a subshell. How can I source the files to the main terminal shell?

source.sh:

source /opt/ros/fuerte/setup.bash;
source  ~/fuerte_workspace/setup.bash;

这是我调用 source.sh 的方式:

Here is how i am calling source.sh:

./source.sh
# This does not echo anything, but I expect it should
echo $ros_config

<小时>

更新:通过按照答案中的建议获取 source.sh，我现在可以看到正在设置的变量.

---

Update: By sourcing source.sh as suggested in the answer, I can now see the variables being set.

source ./source.sh
# This works now
echo $ros_config

推荐答案

使用 ../(点空间点斜线)

使用dot space dot slash"执行shell脚本时，如下图所示，会在当前shell中执行脚本，不会分叉子shell.

While executing the shell script using "dot space dot slash", as shown below, it will execute the script in the current shell without forking a sub shell.

$ . ./setup.bash

也就是说，这会在当前shell中执行setup.bash中指定的命令，并为你准备好环境.

In other words, this executes the commands specified in the setup.bash in the current shell, and prepares the environment for you.

这篇关于bash 脚本中的源文件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！