in reply to Array Problem

open(RESULTS2, "ping.txt") || die;
open(RESULTS, ">ping.txt") || die;

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You open a file for reading and then you truncate that file before reading from it. Try moving the write after reading (and closing) the first filehandle - or try writing to a different file.

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Re^2: Array Problem
by wanderinweezard (Initiate) on Jul 08, 2005 at 14:37 UTC
    I did tr that, now I get an error of:

    Use of uninitialized value in pattern match (m//) at pinger.pl line 22, <RESULTS2> line 1016.

    Any idea what could cause that?
[reply]
      I'd have to see your updated code.
[reply]
        Here is the changed section of the code:

        open(RESULTS2, "ping.txt") || die;
@results = <RESULTS2>;
open(RESULTS, ">ping.txt") || die;
$j = 1;
$a = 0; $f = 0;
while (@results) {
  print $_;
  if (m/Reply/) {
    $output[$j] = $baseIP.$j.": Alive\n";
    $j++; $a++;
  } elsif (m/Request/) {
    $output[$j] = $baseIP.$j.": Dead\n";
    $j++; $f++;
  } else {
    #@output[$j] = $baseIP.$j.": Unusual Results, requires Manual Ping
+\n";
  }
}

print RESULTS "Pinger Results:\n\n";
print RESULTS "Alive Nodes: $a\n";
print RESULTS "Dead Nodes: $f\n";
print RESULTS "\n\nDetailed Results:\n";
print RESULTS @output;
close(RESULTS);
close(RESULTS2);

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