CheckProcessExist Will return true if the process with PID exists.

DownloadFile will download a url to a local file.

判断所给路径文件/文件夹是否存在.

GetExecDirectory 获取当前执行程序目录.

路径是否是隐藏路径.

美观输出数组.

输出所有子目录，目录名.

Unzip will decompress a zip archive, moving all files and folders within the zip file (parameter 1) to an output directory (parameter 2).