I don't think he was intending to load the entire file into memory. The trick is to keep an array of open FILEHANDLES
and read one line at a time from each...
#!/usr/bin/perl -w
use strict;
use IO::File;
#interleave files, first argument is line count, rest are files.
my $lc = shift;
my @fhs;
foreach (@ARGV) {
my $fh = new IO::File;
open ($fh, "<$_");
push @fhs, $fh;
}
while (--$lc) {
foreach (@fhs) {
print scalar(<$_>);
}
}
Tested minimally but the path is clear from here I hope.
--
$you = new YOU;
honk() if $you->love(perl)
