How can I get the source directory of a Bash script from within the script itself?

问题：

How do I get the path of the directory in which a Bash script is located, inside that script?如何获取其中的目录路径的Bash脚本所在，该脚本里面？

I want to use a Bash script as a launcher for another application.我想使用 Bash 脚本作为另一个应用程序的启动器。 I want to change the working directory to the one where the Bash script is located, so I can operate on the files in that directory, like so:我想将工作目录更改为 Bash 脚本所在的目录，以便我可以对该目录中的文件进行操作，如下所示：

$ ./application

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解决方案：

参考一： https://en.stackoom.com/question/Fa3
参考二： https://stackoom.com/question/Fa3