In all files called *.html, delete all blank lines and save into the file itself (-i option): for f in *.html; do sed -i ‘/^ *$/d’ $f; done

sed ‘s/[ ]*$//’ filename

sed -e ‘s#< [^>]*>##g’ < index.php > index.txt Another way of doing it: sed ‘s/< [^>]*>//g’ < index.php > index.txt