It's a buffering issue, buffering works different when script has output to the console and when it writes to a file. Try this: 
#!/usr/bin/perl -w

use strict;

$| = 1;
print "Begin...\n";
for ( my $i = 0; $i < 5; $i++ )
{
        print "$i...\n";
        sleep 2;
}

[download]
How do I flush/unbuffer an output filehandle? Why must I do this?

In reply to Re: Redirecting perl output on the command line by pjotrik
in thread Redirecting perl output on the command line by jbl_bomin

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