added source to lifesaver.sh

lifesaver.sh

@@ -1,6 +1,9 @@
 #!/usr/bin/perl
+
+#source: http://www.etherealbits.com/2012/06/the-perl-script-that-may-save-your-life/
+
 open(DEV, '/dev/sda1') or die "Can't open: $!\n";
 while (read(DEV, $buf, 4096)) {
   print tell(DEV), "\n", $buf, "\n"
-    if $buf =~ /fletter/;
+    if $buf =~ /stringtosearchfor/;
 }