Linux $ (CD ' DirName $ ';p wd) __linux

Linux to get the current directory, you need to execute the following command:

$ (CD ' DirName $ ';p wd)

which

DirName $, get the parent directory of the currently executing script file

CD ' DirName $ ', enter this directory (toggle current working directory)

PWD, display the current working directory (after CD execution)

This should be noted in the course of use:
The command "'" is not a single quotation mark in English, but an English input method under the "~" under the same button under the symbol.