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Disable startup chime

Settings > Sound > Un-check Play sound on startup 

sudo nvram StartupMute=%01

Enable charging sound

Source

defaults write com.apple.PowerChime ChimeOnAllHardware -bool true
open /System/Library/CoreServices/PowerChime.app

Disable with: 

defaults write com.apple.PowerChime ChimeOnAllHardware -bool false

Show current temperature

sudo powermetrics --samplers smc | grep -i "CPU die temperature"

Battery / power status

Current battery charge: 

ioreg -rw0 -c AppleSmartBattery | grep BatteryData | grep -o -e '"StateOfCharge"=[0-9]*' | cut -d '=' -f 2

Show all values: 

ioreg -rw0 -c AppleSmartBattery

HomeBrew

https://docs.brew.sh/Installation

Alternatives: - https://ports.macports.org/port/pass/

Intall

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

You may need to install (it should be installed automatically) 

xcode-select --install

Disable analytics 

brew analytics off

HomeBrew Maintenance

  • To list all the software/lib installed by brew brew list
  • Update an app brew update appname
  • See issues brew doctor
  • Update brew itself brew update
  • List outdated software/lib brew outdated
  • Update all the outdated software/lib brew upgrade
  • Cleanup brew cleaup

Notifications for scripts

Show notifications. Source 

osascript -e 'display notification "hello world!" with title "Greeting" subtitle "More text"'

Show notification with sound. 

osascript -e 'display notification "hello world!" with title "Greeting" subtitle "More text" sound name "Submarine"'

Other commands

sha256sum

shasum -a 256 file

poweroff and other with commands

Source

Shut down without showing a confirmation dialog: 

osascript -e 'tell app "System Events" to shut down'
Shut down after showing a confirmation dialog: 
osascript -e 'tell app "loginwindow" to «event aevtrsdn»'
Restart without showing a confirmation dialog: 
osascript -e 'tell app "System Events" to restart'
Restart after showing a confirmation dialog: 
osascript -e 'tell app "loginwindow" to «event aevtrrst»'
Log out without showing a confirmation dialog: 
osascript -e 'tell app "System Events" to  «event aevtrlgo»'
Log out after showing a confirmation dialog: 
osascript -e 'tell app "System Events" to log out'
Go to sleep (pmset): 
pmset sleepnow
Go to sleep (AppleScript): 
osascript -e 'tell app "System Events" to sleep'
Put displays to sleep (10.9 and later): 
pmset displaysleepnow

Screenshots

Disable shadow. 

defaults write com.apple.screencapture disable-shadow -bool true; killall SystemUIServer
JPEG instead of PNG. 
defaults write com.apple.screencapture type jpg; killall SystemUIServer

Monitoring tools

  • https://github.com/Chris911/iStats
  • powermetrics (included)

bclm

MacOS command-line utility to limit max battery charge https://github.com/zackelia/bclm

  • Current limit bclm read
  • Set new limit bclm write 50. Minimum is 50.
  • Enable sudo bclm persist. Make sure it is always at the same level.
  • Disable sudo bclm unpersist
  • Current charge ioreg -rw0 -c AppleSmartBattery | grep BatteryData | grep -o -e '"StateOfCharge"=[0-9]*' | cut -d '=' -f 2

Links