While working on the command line in Terminal, I occasionally need to open up a new Finder window so that I can take a look at something in the Finder. When this happens, the open command provides a useful shortcut to do so.
To open a new Finder window from the current directory in the Terminal, you would run the following command:
open .
For example, if you have navigated to the Pictures directory in your home folder, running this command would cause the Pictures directory to open in a new Finder window.
If you want to open a Finder window using Terminal for an alternate directory, you would run the following command:
open /path/to/directory
For example, if you wanted to access the XProtect.meta.plist file stored in the /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources directory, you could run this command to open the /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources directory in a new Finder window:
open /System/Library/CoreServices/CoreTypes.bundle/Contents/Resources