Script to update the build number stored in the plist file for an iOS project

update-build-number.sh

#!/bin/sh
#

# SETUP INSTRUCTIONS
#-----------------------
#
# Add this file to a folder called 'scripts' at the same level as your xcodeproj file
# Open XCode
# Select Project on left-hand view
# TARGETS / your target
# Select 'Build Phases'
# Add Run Script phase BEFORE 'compile sources'
# P

plist=$1
buildnum=$(/usr/libexec/Plistbuddy -c "Print CFBundleVersion" "$plist")
if [ -z "$buildnum" ]; then
    exit 1
fi
buildnumplus=$(expr $buildnum + 1)
/usr/libexec/Plistbuddy -c "Set CFBundleVersion $buildnumplus" "$plist"