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Install Rosetta on Apple Silicon

/usr/sbin/softwareupdate --install-rosetta --agree-to-license

Check power settings from CLI

pmset -g

Eject CD/DVD from CLI

drutil eject

Remote Virtual Interface

Remote Virtual Interface (rvi) is very useful for analysing. Install latest Xcode and run it (needed once to install some programs/scripts). Connect iphone/ipad via USB. Lookup UDID in iTunes (click on serial number in main page and right click on UDID). On macbook run "rvictl -s ". You now have a rvi0 device on your macbook on which you can snoop and see all network traffic of iphone/ipad (wireless/cellular). End with rvictl -x . Have fun :-)

Start Eclipse with Java 7

sudo mkdir /System/Library/Java/JavaVirtualMachines
sudo ln -s /Library/Java/JavaVirtualMachines/1.7.0.jdk /System/Library/Java/JavaVirtualMachines/1.6.0.jdk

Remap and keys for native apps

Create the ~/Library/KeyBindings/DefaultKeyBinding.dict file with the following content:

{
    /* Remap Home / End keys to be correct */
    "\UF729"   = "moveToBeginningOfLine:"; /* Home */
    "\UF72B"   = "moveToEndOfLine:"; /* End */
    "$\UF729"  = "moveToBeginningOfLineAndModifySelection:"; /* Shift + Home */
    "$\UF72B"  = "moveToEndOfLineAndModifySelection:"; /* Shift + End */
    "^\UF729"  = "moveToBeginningOfDocument:"; /* Ctrl + Home */
    "^\UF72B"  = "moveToEndOfDocument:"; /* Ctrl + End */
    "$^\UF729" = "moveToBeginningOfDocumentAndModifySelection:"; /* Shift + Ctrl + Home */
    "$^\UF72B" = "moveToEndOfDocumentAndModifySelection:"; /* Shift + Ctrl + End */
}

You need to reopen applications for changes to take effect. Xcode, Terminal, and many cross-platform applications ingnore Xcode, Terminal, and many cross-platform applications ignore DefaultKeyBinding.dict`.

Remap <Home and keys in Eclipse

Preferences->General->Keys, filter for "line start" and "line end" and change binding.

Remap <Home and keys in Firefox/Thunderbird

Use the Keyfixer addon

List IPv4 open ports

lsof -nP -i4 | grep LISTEN

DNS query using the macOS resolver

dns-sd -G v4v6 www.example.com

Avoid DavMail using the dGPU all the time:

defaults write /Applications/DavMail.app/Contents/Info.plist NSSupportsAutomaticGraphicsSwitching -bool YES

Same for WebEx

defaults write /Applications/Webex/Cisco\ Webex\ Meetings.app/Contents/Info.plist NSSupportsAutomaticGraphicsSwitching -bool YES

Disable an installed JDK to be selected as default

mv $PATH_TO_JDK/Content/Info.plist $PATH_TO_JDK/Content/Info.plist.disabled

Enable the AAC and/or aptX Bluetooth audio codecs:

defaults write bluetoothaudiod "Enable AptX codec" -bool true
defaults write bluetoothaudiod "Enable AAC codec" -bool true

Reset Touch Bar

sudo killall ControlStrip