Script that resizes and crop an image and then sets as background for iTerm

iterm-fit-and-set-bg

#!/bin/bash

# Script that resizes and crop an image and then sets as background for iTerm

# First, check to see if we have the correct terminal!
if [ "$(tty)" == 'not a tty' ] || [ "$TERM_PROGRAM" != "iTerm.app" ] ; then
  exit $?
fi

# Console dimensions
# Generate dimension based on screensize
H=$((1440/178*`stty size | cut -d ' ' -f2`))
V=$((900/47*`stty size | cut -d ' ' -f1`))
DIMENSIONS=$H"x"$V

function set_bg {
  local tty=$(tty)
  osascript -e "
    tell application \"iTerm\"
      repeat with theTerminal in terminals
        tell theTerminal
          try
            tell session id \"$tty\"
              set background image path to \"$1\"
            end tell
          on error errmesg number errn
          end try
        end tell
      end repeat
    end tell"
}

convert /path/to/source-image.jpg -resize "$DIMENSIONS^" -gravity center -crop $DIMENSIONS+0+0 +repage /tmp/iterm-bg-$DIMENSIONS.jpg
set_bg "/tmp/iterm-bg-$DIMENSIONS.jpg"