Depending on the file format, perhaps something like this?
#!/usr/bin/perl
use strict;
use warnings;
my %prns;
for (<DATA>)
{
my ( $num, $prn ) = split /\s/;
$prns{$num} = $prn;
}
my @ord = sort { $b <=> $a } keys %prns;
print "Highest numbered printer is $prns{shift @ord}\n";
__DATA__
1 prt1
2 prt2
99 prt99
10 prt10
100 prt100
7 prt7
update
use strict;
use warnings;
my %prns;
for (<DATA>)
{
my ( $printer, $num, $cmd ) = split /:/;
$prns{$num} = $printer;
}
my @ord = sort { $b <=> $a } keys %prns;
print "Highest numbered printer is $prns{shift @ord}\n";
__DATA__
M08_amvpss09_MEDIP :275:lp -damvpss09
M07_amvpss09_MEDIP :279:lp -damvpss09
M09_amvpss09_MEDIP :278:lp -damvpss09
M01_amvpss09_MEDIP :2:lp -damvpss09
M04_amvpss09_MEDIP :1000:lp -damvpss09
Ted
--
"That which we persist in doing becomes easier, not that the task itself has become easier, but that our ability to perform it has improved."
--Ralph Waldo Emerson
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