Your program works with files, but Perl’s errors and warnings only report the last used filehandle, not the name of the file.
Use the filename as the filehandle:
open($path, "< $path") or die "Couldn't open $path for reading : $!\n";
Ordinarily, error messages say:
Argument "3\n" isn't numeric in multiply at tallyweb line 16, <LOG> chunk 17.
The filehandle LOG doesn’t help much because you don’t know which file the handle was connected to. By using the filename itself as indirect filehandle, Perl produces more informative errors and warnings:
Argument "3\n" isn't numeric in multiply at tallyweb
line 16, </usr/local/data/mylog3.dat> chunk 17.
Unfortunately, this doesn’t work with
refs turned on because the variable
$path doesn’t really have a filehandle in
it, but just a string that sometimes behaves as one. The chunk
mentioned in warnings and error messages is the current value of the
Section 7.1; the
open function in
perlfunc(1) and Chapter 3 of