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#! /usr/bin/perl
# implement "show cpu-info"
open my $cpuinfo, '<', '/proc/cpuinfo'
or die "Can't open /proc/cpuinfo : $!";
my %models;
my %packages;
my %cores;
my %map = (
'model name' => \%models,
'physical id' => \%packages,
'core id' => \%cores
);
my $cpu = 0;
while (<$cpuinfo>) {
chomp;
my ( $tag, $val ) = split /:/;
if ( !$tag ) {
++$cpu;
next;
}
$tag =~ s/\s+$//;
$val =~ s/^\s+//;
my $ref = $map{$tag};
$ref->{$val} = $cpu if ($ref);
}
close $cpuinfo;
print "Processors ", $cpu, "\n";
print "Packages ", scalar keys %packages, "\n" if (%packages);
print "Cores ", scalar keys %cores, "\n" if (%cores);
# Handle any attempt to run different CPU models
print "Model ", join( " \n", keys %models ), "\n";
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