Open the Current Working Folder from the Command-line/Terminal in Windows, Ubuntu or OS X
Sometimes you need to use the operating system file manager rather than a terminal so a quick way of opening it can be seen below. For the Windows command line:
The OS X terminal:
The Ubuntu console:
This will work for parent folders ".." as well as current directory. Note, in case you are interested to do the same in Haiku OS just use the OS X version.