Increments the build number

Increment build Xcode 4

#!/bin/bash

buildPlist="${PROJECT_DIR}/${INFOPLIST_FILE}"

# Get the existing buildVersion and buildNumber values from the buildPlist
versionString=$(/usr/libexec/PlistBuddy -c "Print CFBundleShortVersionString" "${buildPlist}")
buildNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "${buildPlist}")
buildDate=$(date "+%Y%m%d.%H%M%S")

# Increment the buildNumber
buildNumber=$(($buildNumber + 1))

# Set the version numbers in the buildPlist
/usr/libexec/PlistBuddy -c "Set :CFBuildDate $buildDate" "${buildPlist}"
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $buildNumber" "${buildPlist}"
/usr/libexec/PlistBuddy -c "Set :CFBundleLongVersionString $versionString.$buildDate" "${buildPlist}"