Auto Incrementing Build Version - iOS

automate.sh

#!/bin/bash
buildPlist=${INFOPLIST_FILE}
newVersion=`/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "$buildPlist" | /usr/bin/perl -pe 's/(\d+)/($1+1)/eg'`
/usr/libexec/PListBuddy -c "Set :CFBundleVersion $newVersion" "$buildPlist"

instructions.txt

Open Target > General
Set build number to 0 (or desired starting number)

Open Target > Build Phases
Editor > Add Build Phase > Add Run Script Build Phase
Shell: /bin/bash
Paste the shell script

output.m

NSDictionary *appInfo = [[NSBundle mainBundle] infoDictionary];
NSString *appVersion = [NSString stringWithFormat:@"%@.%@", appInfo[@"CFBundleShortVersionString"], appInfo[@"CFBundleVersion"]];