for i in *.c *.h *.m *.txt; do sed -i"_bak" -e "s/Copyright (C) 2003--2013, Rene Schneider/" $i ; done

for i in $(find . -type f |grep -v .svn ); do (grep "Copyright (C)" $i >/dev/null || echo "no copyright header in "$i); done 

