select() is only blocking the first time it gets executed. I want it to block everytime though, what am i doing wrong ? 
#!/usr/bin/perl -w

use strict;
use POSIX qw(mkfifo);
use Fcntl qw(O_RDONLY O_NONBLOCK);



my $fifofile = "fifo";
my $inputbuf;

unlink($fifofile);
mkfifo($fifofile, 0666) or die (' can\'t create FIFO:'.$fifofile);
sysopen(FIFOFD, $fifofile, O_RDONLY | O_NONBLOCK ) or die ("can\'t rea
+d FIFO:'.$fifofile");


while (1){
    my $rin ='';

    vec($rin,0,1)=1;
    vec($rin,fileno(FIFOFD),1)=1;
    select( $rin, undef, undef, undef );
    print "select returning\n";
    
my $fromfifo;
while ( sysread(FIFOFD, $fromfifo, 1) == 1 ){
        $inputbuf .= $fromfifo ;
    }
    my $command;
    my $index;
        while ( $index = index($inputbuf,"\n" )+1 ){
            my $command =  substr($inputbuf,0,$index,"");
        if ( defined ($command) ) {
                print $command;
            }
        }
}

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In reply to select($rin,undef,undef,undef) only blocking once by rabbit7

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