Little snippet to capture the current screen in OSX and set it as Background Picture. Works for multiple Desktops by just ignoring errors. :-) Useful if you got a fullscreen App that might crash and have a fallback with a still image while restarting. I use this quite often in a tradefair context... have fun!

snapdesk.sh

# usage: ./snapdesk.sh user@localhost

TARGET=$1
echo $TARGET;
ssh $TARGET << 'ENDSSH'

mkdir -p ~/snapdesk;
screencapture ~/snapdesk/1.png ~/snapdesk/2.png ~/snapdesk/3.png ~/snapdesk/4.png ~/snapdesk/5.png;
osascript -e 'tell application "System Events" to set picture of desktop 1 to "~/snapdesk/1.png"'
osascript -e 'tell application "System Events" to set picture of desktop 2 to "~/snapdesk/2.png"'
osascript -e 'tell application "System Events" to set picture of desktop 3 to "~/snapdesk/3.png"'
osascript -e 'tell application "System Events" to set picture of desktop 4 to "~/snapdesk/4.png"'
osascript -e 'tell application "System Events" to set picture of desktop 5 to "~/snapdesk/5.png"'


ENDSSH

scp -r $TARGET:./snapdesk/ "./snapdesk_$TARGET"