Am 23. Jun, 2011 schwätzte Steven A. DuChene so:
moin moin,
heading out right now, so can't be detailed.
Check autoflush.
HANDLE->autoflush(EXPR)
$OUTPUT_AUTOFLUSH
$| If set to nonzero, forces a flush right away and after
every
I don't remember which CPAN module I used last year ( might have been
File::Tail ), but there was an option to set to make sure it kept the file
open to watch for new data.
ciao,
der.hans
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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