As with the other post today, in a piped open, close needs to be checked for errors as well. Or, let me just plug my relatively new module IPC::Run3::Shell::CLIWrapper ;-)

use JSON::PP qw/decode_json/;
use IPC::Run3::Shell::CLIWrapper;

my $geoip = IPC::Run3::Shell::CLIWrapper->new( { fail_on_stderr=>1,
    stdout_filter => sub {$_=decode_json($_)} }, qw/ geoip --json
    --DB=dbi:SQLite:dbname=geoipdb / );

my $data = $geoip->('209.197.123.153');
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