BuildDmg.sh

#!/bin/sh

# BuildDmg.sh
# Build OS X .dmg install file
# Author   maojiajun 

set -eu

###################################################################################
# config, change for you app.

# dmg title
TITLE="YoudaoNote"     
# app path to add
APP_PATH="YoudaoNote.app"
# writable dmg size (k), (my be changed for your app)
size="10000"
# background image name, use your own image
BG_IMAGE="install.png"
# final name
DMG_NAME="YoudaoNote.dmg"

# should not be changed
# temp writable dmg name
TEMP_DMG_NAME="Temp.dmg"
# option
dmg_options="-fs HFS+ -fsargs '-c c=64,a=16,e=16' -format UDRW -size ${size}k"
# temp path
DIR="dmg"


###################################################################################

#setp 1 : create an writable dmg
echo "Step 1: create writable dmg"

rm -rf "$DIR"
mkdir $DIR

cp -r "$APP_PATH" "$DIR"
chmod -Rf go-w "$DIR"

ln -s /Applications "$DIR/Applications"

rm -f "$TEMP_DMG_NAME"

hdiutil create -srcfolder $DIR -volname $TITLE -fs HFS+ \
  -fsargs "-c c=64,a=16,e=16" -format UDRW -size ${size}k "$TEMP_DMG_NAME"

rm -rf "$DIR"

#setp 2 : mount the dmg and copy the background image to .bacground
echo "steo 2: add bacground image"

device=$(hdiutil attach -readwrite -noverify -noautoopen ${TEMP_DMG_NAME} | \
    egrep '^/dev/' | sed 1q | awk '{print $1}')

mkdir /Volumes/${TITLE}/.background
cp $BG_IMAGE /Volumes/${TITLE}/.background

#step 3: set background image and position
echo "Step 3: Set UI"

echo '
   tell application "Finder"
     tell disk "'${TITLE}'"
           open
           set current view of container window to icon view
           set toolbar visible of container window to false
           set statusbar visible of container window to false
           set the bounds of container window to {400, 100, 978, 482}
           set theViewOptions to the icon view options of container window
           set arrangement of theViewOptions to not arranged
           set icon size of theViewOptions to 72
           set background picture of theViewOptions to file ".background:'${BG_IMAGE}'"
           set position of item "'${TITLE}'" of container window to {200, 200}
           set position of item "Applications" of container window to {375, 200}
           update without registering applications
           delay 5
           #eject
     end tell
   end tell
' | osascript

#setp 4: create a read-only dmg from the dmg
echo "Step 4: create final read-only dmg"

sudo chmod -Rf go-w /Volumes/"${TITLE}"
sync
sync
hdiutil detach ${device}
hdiutil convert ${TEMP_DMG_NAME} -format UDZO -imagekey zlib-level=9 -o "${DMG_NAME}"