To activate the sound effect
$ defaults write com.apple.PowerChime ChimeOnAllHardware -bool true; open /System/Library/CoreServices/PowerChime.app &Do deactivate it, simply change the ChimeOnAllHardware boolean to false.
$ defaults write com.apple.PowerChime ChimeOnAllHardware -bool false; open /System/Library/CoreServices/PowerChime.app &Note: Do not include the
$yourself.
You can use custom sounds for the chime.
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Open the contents of the
PowerChime.app$ open /System/Library/CoreServices/PowerChime.app/Contents/Resources
or you can use Finder and Go to Folder...
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Make a backup of
connect_power.aif(e.g.connect_power.aif~backup. -
Drop any audio file of
AIFF (.aif)format and rename it toconnect_power.aif.
Note: Authentication may be required in order to change the contents.
Why is the defaults command run as a job with the
&?