jars@jars-desktop:~$ perl -MData::Dumper -e 'my $d = Data::Dumper->new( [\%ENV] ); print $d->Dump'
$VAR1 = {
          'PWD' => '/home/jars',
          'LANG' => 'en_US.UTF-8',
          'USER' => 'jars',
          'LOGNAME' => 'jars',
          'GNOME_DESKTOP_SESSION_ID' => 'Default',
          'LESSCLOSE' => '/usr/bin/lesspipe %s %s',
          'SHLVL' => '1',
          'PATH' => '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games',
          'WINDOWID' => '48257898',
          'COLORTERM' => 'gnome-terminal',
          'TERM' => 'xterm',
          'HOME' => '/home/jars',
          'WINDOWPATH' => '7',
          'DISPLAY' => ':0.0',
          'USERNAME' => 'jars',
          '_' => '/usr/bin/perl',
          'DESKTOP_SESSION' => 'default',
          'GDM_LANG' => 'en_US.UTF-8',
          'SHELL' => '/bin/bash',
          'SESSION_MANAGER' => 'local/jars-desktop:/tmp/.ICE-unix/5476',
        };
jars@jars-desktop:~$