for i in `ls *.html` do echo $i #sed "s,<body>,<body> <center> <p><!--#include virtual=\"adsense.html\" --> </center>," $i > tmp.out #mv tmp.out $i sed "s,<body >,<body> <center> <p><!--#include virtual=\"adsense.html\" --> </center>," $i > tmp.out mv tmp.out $i done chmod 777 *.html