if [[ "$1" == *.py ]]; then apache_header="apache_python.txt" else apache_header="apache_header.txt" fi apache_lines=$(wc -l < "${apache_header}") apache_md5=$(cat "${apache_header}" | md5) header_md5=$(head -n ${apache_lines} $1 | md5) if [ "${header_md5}" == "${apache_md5}" ]; then keep_lines=$(($(wc -l < $1) - ${apache_lines})) tail -n ${keep_lines} $1 > _remove_apache_header.txt mv _remove_apache_header.txt $1 fi