On Jun 23, 2011 5:17 PM, "Steven A. DuChene" <linux-clusters@mindspring.com> wrote:
> I am attempting to do a "tail -f" on a log file that has a new line added to it every 15 seconds.
> I need to parse and process each new line as it is added to the file.
>
> I am trying to use the following example code from cpan to see if the basic concept will
> work using File::Tail but when I run the example code below and add lines to the file
> I get nothing out.
>
> #!/usr/bin/perl
>
> use File::Tail;
> $file = File::Tail->new("/home/sad/bin/power_input_stuff.txt");
> while (defined(my $line = $file->read))
> {
> print $line;
> }
>
>
> I am doing the following in another xterm window to add lines to the file:
>
> echo "2011:06:21:15:07:46 57 01 00 a0 04 a0 00 c3 00 a7 00 33 16 01 4e 01 00 00 00 50" >> power_input_stuff.txt
>
> but I am getting NOTHING back in the original window where the perl script is running.
>
> The above perl code is a near direct copy of the File::Tail example code on cpan so I would expect it to work.
>
> What am I doing wrong???
> --
> Steven DuChene
>
>
>
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