open(INFO, "testdoc.txt");

Always check for the success of your open: 

open INFO, '<', 'testdoc.txt' or die "Can't open testdoc.txt: $!";

[download]

That way you won't get bad surprises if the file is not available. 

for (split//,$line) {
            $test = sprintf "\%3o\n", ord $_;

                       if ($test == 14) {

[download]

That's a really odd way to test if a certain character appears in a line. What about this one? 

my $char = chr oct 14;
while (my $line = <INFO>){
   if ($line =~ m/\Q$char\E/){
      # do whatever you want
   }
}

[download]

You might also take a look at index.

In reply to Re: ASCII insert after read by moritz
in thread ASCII insert after read by monkjeff

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