package Utilities;

use strict;
use warnings;

use Exporter qw{import};

my @sys_exports = qw{$SYS_DIR $SYS_OTHER};
my @util_exports = qw{$UTIL_THIS $UTIL_THAT};

our @EXPORT_OK = (@sys_exports, @util_exports);
our %EXPORT_TAGS = (SYS => [@sys_exports], UTIL => [@util_exports]);

our $SYS_DIR = "sys_dir";
our $SYS_OTHER = "sys_other";
our $UTIL_THIS = "util_this";
our $UTIL_THAT = "util_that";

1;

##</code><code>##

$ perl -Mstrict -Mwarnings -E '
    use Utilities;                     
    say $SYS_DIR;
'
Global symbol "$SYS_DIR" requires explicit package name at -e line 3.
Execution of -e aborted due to compilation errors.

##</code><code>##

$ perl -Mstrict -Mwarnings -E '
    use Utilities qw{$SYS_DIR};        
    say $SYS_DIR;
'
sys_dir

##</code><code>##

$ perl -Mstrict -Mwarnings -E '
    use Utilities qw{:SYS};            
    say $SYS_DIR;
'
sys_dir

##</code><code>##

$ perl -Mstrict -Mwarnings -E '
    use Utilities qw{:UTIL $SYS_OTHER};
    say $SYS_OTHER;
    say $UTIL_THAT;
'
sys_other
util_that