• switch on/off wifi:
    networksetup -setairportpower en1 off
  • login script:

    sudo defaults write com.apple.loginwindow LoginHook /path/to/script

    To Check it

    sudo defaults read com.apple.loginwindow

    To remove this hook, delete the property:

    sudo defaults delete com.apple.loginwindow LoginHook

    Troubleshoot: use grep LogoutScript /var/log/system.log

  • Untick the “Auto Proxy Discovery”

    Networksetup -setproxyautodiscovery Ethernet off



Clean up messy open with Menu


/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain u -domain s -domain l -v


Work on Applications

How to Find All Components of Apps / Software in Mac OS X

We’ll use Terminal and mdfind, though other command line search tools can also work for this purpose. The general syntax to use is the following command with the -name flag*:

mdfind -name "application name"


mdfind -name VLC


remove the application:

rm -rif /Applications/VLC.app/