#!/bin/bash

# Temporary file to hold the first file's header

first_file_header=$(mktemp)

# Flag to indicate if all files are the same

all_same=true

# Path to the directory containing the files

directory_path=$1

# Define the pattern of files you want to check, e.g., "*.c" for C source files

file_pattern="*"

# Extract the first 22 lines of a specific file as the reference

# Replace 'specific_file_to_compare' with a real file name you want to use as a reference

head -n 22 "${2}" > "$first_file_header"

# Use find to recursively get all files matching the pattern

find "$directory_path" -type f -name "$file_pattern" | while read file; do

# Temporary file for the current file's header

current_file_header=$(mktemp)

# Extract the first 22 lines of the current file

head -n 22 "$file" > "$current_file_header"

# Compare the current file's header with the first file's header

if ! diff "$first_file_header" "$current_file_header" > /dev/null; then

echo "Difference found in: $file"

all_same=false

fi

# Clean up the temporary file

rm "$current_file_header"

done

# Clean up

rm "$first_file_header"