#!/bin/bash YEAR=`cat LICENSE.txt | grep "^Copyright" | awk '{print $3}'` NOW=`date '+%Y'` if [ $NOW -gt $YEAR ]; then echo "Current year $NOW > $YEAR, updating license..." LICENSE=`cat LICENSE.txt` UPDATED=`echo "${LICENSE}" | sed "s/${YEAR}/${NOW}/"` echo "${UPDATED}" > LICENSE.txt fi