cmd open current directory in explorer code example

Example 1: open current folder in explorer from cmd

The period is used in the Command Prompt as a shorthand for the current folder.
Enter start .
or 
Enter Explorer .

Example 2: open current dir cmd

start .      or       explorer .

("." is a shortcut for current director)

Example 3: open folder from terminal windows

Just use "open [path_to_dir]" in Unix or "start [path_to_dir]" in Windows as:
open .	#Open current directdory in Unix
start . #Open current directory in Windows