#!/usr/local/bin/perl -pi
# i replaces in place. Text can be replaced in all files at one go.
s/yogeshw\@yahoo.com/yogeshw \\at\/ iitbombay.org/g;
s/http:\/\/icarus.stsci.edu\/~yogesh/http:\/\/www-int.stsci.edu\/~yogesh/g;