Just sharing something neat I learned today about Linux...

In Windows, I used to do this a lot:
-- Be at a command prompt, in some directory, e.g.: C:\my files\more files
-- When I need to see that same folder in the Windows GUI, I'd type: start . (note the period, meaning "this directory")
-- The Windows file manager would open in a new window, focused on that same folder as the path.

I realized today I didn't know how to do that in Linux (I'm on Ubuntu) so I searched around and found the xdg-open command.

The man page for xdg-open says:

xdg-open opens a file or URL in the user's preferred application. If a URL is provided the URL will be opened in the user's preferred web browser.

At any terminal prompt, I type something like:

xdg-open .

or xdg-open ~/Documents

And boom! A new KDE Dolphin files window appears, focused on that path.

or this works too, but with a browser:

xdg-open http://eff.org

Rock and/or roll!