Install nmap on Mac OSX

About the App

  • App name: nmap
  • App description: Port scanning utility for large networks
  • App website:

Install the App

  1. Press Command+Space and type Terminal and press enter/return key.
  2. Run in Terminal app:
ruby -e "$(curl -fsSL" < /dev/null 2> /dev/null

and press enter/return key.
If the screen prompts you to enter a password, please enter your Mac’s user password to continue. When you type the password, it won’t be displayed on screen, but the system would accept it. So just type your password and press ENTER/RETURN key. Then wait for the command to finish.Run:

brew install nmap

Done! You can now use nmap.

Install nmap on Mac OSX

Space in Bar

The dock bar on your Mac is quickly cluttered with many app icons. If you have the same, adding a space between the icons can help to understand some things.

The “spaces” that this command adds are invisible fragments that can be easily removed if necessary by dragging them from the dock bar.

To add an empty fragment, open Terminal and enter the following command:

defaults write persistent-apps -array-add '{"tile-type" = "spacer-tile";}'; killall dock

Once the command is completed, the dock bar will instantly disappear and reboot with invisible tiles to create space

Space in Bar

How to remove duplicates in the menu

Many OS X users regularly experience the problem of duplicating menu bars in the “open with program” (open with) item. The following command will help solve the problem:

/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user

This command re-indexes the application database. Then restart Finder:

killall Finder


Option two, compile and save yes to disk for further use in dmg OS X format:

do shell script "/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user" do shell script "killall Finder"
How to remove duplicates in the menu