You need to close $fh1 before re-opening the file “j.txt” for reading. Or, alternatively, open the file just once, for both writing and reading: 

...
open (my $fh1, "+>", $output1) or die "Cannot open file '$output1': $!
+"; 
...
seek $fh1, 0, 0;

while (<$fh1>) {
...

[download]

(But — why don’t you use strict; ??)

Update: To clarify: the problem arises because the filehandle FILE is positioned at EOF (end-of-file), so the first call to <FILE> returns undef and the body of the while loop is never entered. Calling close $fh1; before re-opening the file ensures that FILE is initially positioned at the beginning of the file rather than the end. Calling seek $fh1, 0, 0; achieves the same result without the overhead of re-opening the file.

Hope that helps,

Athanasius <°(((>< contra mundum Iustus alius egestas vitae, eros Piratica,

In reply to Re: How can one input a textfile from desktop just created? by Athanasius
in thread How can one input a textfile from desktop just created? by supriyoch_2008

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