> try this source and wonder why perl hangs or reports bad file number!
> any help is appreciated.
> TIA
> [log in to unmask]
>
>
> #!/usr/local/bin/perl
> #
> $fname="Pipe";
>
> unless (-p $fname) {
>   unlink $fname;
>   system('mkfifo', $fname) &&
>     system('mknod', $fname, 'p') &&
>     die "can't create $fname: $!!\n";
>   }
>
> # uncomment one of the open commands to see the difference
>
> # open( PIPE1, "+>$fname") || die "Could not open the named pipe -
> $!!\n";
> # will print error:
> # Could not open the named pipe - Bad file number!
>
> # open( PIPE2, ">$fname") || die "Could not open the named pipe -
> $!!\n";
> # program hangs
>