#this logs text to stdout
log("foobar")
#define a variable
set moo to 9
log(moo)
#get the window dimensions of the Iterm2 window:
tell application "Iterm2" to set window_geometry to (get the bounds of the front window)
log(window_geometry)
tell app "Finder" to display dialog "hello world"

osascript demo.scpt