부팅음 제거/복구

iMac 21.5-inch, Late 2012

터미널 창에 아래의 명령어를 입력하면 부팅음이 제거된다

sudo nvram SystemAudioVolume="%00"

부팅음 복구

sudo nvram -d SystemAudioVolume

or

sudo nvram SystemAudioVolume="%80"

확인

nvram -p

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MacBook Pro 13-inch, Early 2011

터미널 창을 연다

스크립트 파일을 생성

ctrl+o 저장 ctrl+x 종료

sudo nano /Library/Scripts/mute-on.sh

#!/bin/bash

osascript -e 'set volume with output muted'

sudo nano /Library/Scripts/mute-off.sh

#!/bin/bash

osascript -e 'set volume without output muted'

sudo chmod u+x /Library/Scripts/mute-on.sh

sudo chmod u+x /Library/Scripts/mute-off.sh

등록여부 확인

? sudo defaults read com.apple.loginwindow LoginHook

? sudo defaults read com.apple.loginwindow LogoutHook

등록

sudo defaults write com.apple.loginwindow LoginHook /Library/Scripts/mute-off.sh

sudo defaults write com.apple.loginwindow LogoutHook /Library/Scripts/mute-on.sh

삭제시

sudo defaults delete com.apple.loginwindow LoginHook

sudo defaults delete com.apple.loginwindow LogoutHook

참고사이트: https://discussions.apple.com/thread/3208783?tstart=100

숨긴파일 보기

defaults write com.apple.finder AppleShowAllFiles -bool true

killall Finder