Application to imitate Win+R (Run)
App launchers and utilities like Launch Bar and Quicksilver can be pretty useful, but you might want to try learning the command line. After all, the Windows Run prompt is just a single line command prompt.

It can be a bit daunting, but you can just learn bit by bit, and after a while you'll be able to do some pretty powerful things.

To get started, open up Terminal (found in /Applications/Utilities).

Here are a few basic commands that you'll find useful:


open opens whatever path it's followed by. Some examples:


open /Applications/ opens the Applications folder in Finder.
open ~ opens your home folder. ~ is shorthand for your home folder (i.e. /Users/you.
open ~/Documents/myfile.txt opens myfile.txt in your Documents folder in whatever application is set to open that file.
You can use open to open a file in a specific app with the -a flag. open -a TextEdit website.html would open that file in TextEdit, and open -a Safari website.html would open the same file in Safari.


open -a followed by an application, with no file or path specified will activate that application.


ls lists the contents of the current directory, or any other directory you specify.


By default, your current directory is ~, so if you specify a file without a path, the command line looks for it in your current path. But you can specify a full path to address any file in your filesystem.

cd changes your current directory. E.g. cd ~/Documents moves you to your Documents folder, and cd /Applications moves you to the applications folder.
Bonus: say "I know now why you cry, but it's something I can never do"


That's just a small fraction of what you can do with the command line, but perhaps it will whet your appetite. If you want to learn more, there are tons of resources out there for learning the command line — OS X's command line is very similar to BSD and Linux, so many resources applying to those will be helpful. There's also a big thread here on Ask Different with various tips and tricks for the terminal.