If your part numbers will never have spaces in them, you could
split your lines and build up a
hash of arrays:
use strict;
use warnings;
print "ARGV: $#ARGV\n";
if ($#ARGV != 0) {
print "One, and only one (not $#ARGV), command line parameter is
+expected\n";
exit;
}
my $inputFile=$ARGV[0];
if ( not -e $inputFile) {
die "$inputFile doesn't exist!!!\nExiting.\n";
}
print "Attempting to open $inputFile\n";
open my $file, $inputFile or die "Could not open $inputFile: $!";
my %parts;
while (<$file>) {
next if /^Part/;
my ($part, $info) = split /\s+/, $_, 2;
$info =~ s/\s//g;
push @{ $parts{$info} }, $part;
}
for my $info (sort keys %parts) {
print "@{ $parts{$info} } - $info - ", scalar @{ $parts{$info} },
+"\n";
}
__END__
ARGV: 0
Attempting to open 1.txt
P10 - CircleBlue4 - 1
P9 - CircleGreen3 - 1
P1 P4 - CircleRed1 - 2
P7 - RectangleBlue4 - 1
P3 - RectangleRed4 - 1
P5 - SquareBlue1 - 1
P2 P6 - SquareGreen3 - 2
P8 - SquareRed2 - 1
With a little more work, you could sort on hash values to get the output in the order you want.