Flutter increment build number script

increment_build_number.sh

#!/bin/bash

# Read pubspec.yaml
file="pubspec.yaml"

# Use grep and sed to find and increment the build number
if grep -qE "version: [0-9]+\.[0-9]+\.[0-9]+\+[0-9]+" "$file"; then
    # Get the current build number
    current_build=$(grep -E "version: [0-9]+\.[0-9]+\.[0-9]+\+[0-9]+" "$file" | sed -E "s/version: [0-9]+\.[0-9]+\.[0-9]+\+([0-9]+)/\1/")
    
    # Increment the build number
    new_build=$((current_build + 1))
    
    # Update the file with the new build number
    sed -i '' -E "s/(version: [0-9]+\.[0-9]+\.[0-9]+\+)[0-9]+/\1$new_build/" "$file"
    
    echo "Build number incremented successfully from $current_build to $new_build."
else
    echo "No version found in pubspec.yaml"
fi