# Set standby delay to 24 hours (default is 1 hour)
sudo pmset -a standbydelay 86400

# Disable the sound effects on boot
sudo nvram SystemAudioVolume=" "

# Remove the dock delay.
defaults write com.apple.Dock autohide-delay -float 0

# Disable transparency in the menu bar and elsewhere on Yosemite.
defaults write com.apple.universalaccess reduceTransparency -bool true

# Change the default screenshot location.
defaults write com.apple.screencapture location ~/Pictures/Screenshots