Auto-incrementing build number setting in Xcode

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Add following script under “Build Phases” as a “New Run Script Phase”. (tested with Xcode 7.2)

#!/bin/bash
buildNumber=$(/usr/libexec/PlistBuddy -c "Print CFBundleVersion" "$PRODUCT_SETTINGS_PATH")
buildNumber=$(($buildNumber + 1))
/usr/libexec/PlistBuddy -c "Set :CFBundleVersion $buildNumber" "$PRODUCT_SETTINGS_PATH"

P.S. If the number becomes too big, the script can be placed in the Scheme for Archive as a “Pre-actions” item.