Some one-liners which improve daily workflow...
# shutdown without confirmation
$ osascript -e 'tell application "System Events" to shut down'
# restart without confirmation
$ osascript -e 'tell application "System Events" to restart'
# show current volume
$ osascript -e 'output volume of (get volume settings)'
# set volume (0 - 100)
$ osascript -e 'set volume output volume 50'
# show mute state
$ osascript -e 'output muted of (get volume settings)'
# set mute state (true, false)
$ osascript -e 'set volume output muted true'
# open hard drive that contains the currently running System folder
$ osascript -e 'tell application "Finder" to open the startup disk'
# open home directory in Finder
$ osascript -e 'tell application "Finder" to open home'
# get name of front Finder window
$ osascript -e 'tell application "Finder" to get the name of front Finder window'
# get position of front Finder window
$ osascript -e 'tell application "Finder" to get the position of the front Finder window'
# set position of front Finder window
$ osascript -e 'tell application "Finder" to set the position of the front Finder window to {94, 134}'
# open new Finder window
$ osascript -e 'tell application "Finder" to make new Finder window'
# close all Finder windows
$ osascript -e 'tell application "Finder" to close every window'
# empty Trash
$ osascript -e 'tell application "Finder" to empty trash'
# set background image
$ osascript -e 'tell application "Finder" to set desktop picture to POSIX file "<path/to/image>"'
# eject all mountable volumes
$ osascript -e 'tell application "Finder" to eject (every disk whose ejectable is true)'
# choose file by Finder and print parent folder
$ osascript -e 'tell application "Finder" to get name of container of (choose file)'
# hide Calendar
$ osascript -e 'tell application "Finder"' -e 'set visible of process "Calendar" to false' -e 'end tell'
# open Messages
$ osascript -e 'tell application "messages" to activate'
# open and focus Safari
$ osascript -e 'tell application "Safari" to activate'
# close Safari
$ osascript -e 'quit application "safari.app"'
# get current URL
$ osascript -e 'tell application "Safari" to get URL of current tab of front window'
# change to 2nd tab
$ osascript -e 'tell application "Safari" to tell front window to set current tab to tab 2'
# close 1st tab
$ osascript -e 'tell application "Safari" to close tab 1 of window 1'
# play movie of front QuickTime
$ osascript -e 'tell application "QuickTime Player" to play the front movie'
# stop movie of front QuickTime
$ osascript -e 'tell application "QuickTime Player" to stop the front movie'
# open iTunes
$ osascript -e 'tell application "iTunes" to activate'
# get name of last song in playlist
$ osascript -e 'tell application "iTunes" to get the name of the last track of the first library playlist'
# stop iTunes
$ osascript -e 'tell application "iTunes" to stop'