Hi All, Why cannot I read/write/append to the same filehandle? I open my FH like 
my $CF = new FileHandle "$cntrF", O_RDWR | O_APPEND || die '"cntrF' di
+d not open $!\n";

[download]

My logic is if a file exists and has data in it, set flag to 1, set counter to 0, open filehandle as above, while (<$FH>), while (m/\b$flag\b/g), counter++, end while, if counter > 3.... I cannot do both, read to get the # of times flag appears in my file and append the flag + \n to my file. 


$| = 1;
if ( -e $log ) {
    my $flag = 1;
    my $cntr = 0;
    no warnings;
    my $CF = new FileHandle "$cntrF", O_RDWR | O_APPEND || die "'cntrF
+' did not open $!\n";
    print $CF "$flag\n";
    while (<$CF>) {
        while (m/\b$flag\b/g) {
            $cntr++;
        }
    }
    print "$cntr\n";
    if ( $cntr <= 3 ) {
        _mailme($alertaddr, $Esubject, $log);
        $CF->close;
        exit 1;
    }
    elsif ( $cntr > 3 && $percnt >= 98 ) {
        _mailme($alertaddr, $Esubject, $log);
        $CF->close;
        exit 1;

    }
    else {
        $CF->close;
        print "closed\n";
        exit 0;

[download]
thnkU!

In reply to O_RDWR and O_APPEND??? by dbs

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