You need to tell Perl which character encoding your terminal accepts. For example

binmode STDOUT, ':encoding(UTF-8)';
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See for example Character Encoding in Perl or perlunitut

Or, since the question is about the command line, using -CO as argument to perl.

Almost correct: C2 not C0. And with perl-5.16, you don't even need to load charnames ☺

% bleadperl -C2 -E'say"\N{FACE WITH TEARS OF JOY}"'
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😂

Enjoy, Have FUN! H.Merijn

As you can render the one smilie, but not the other, I'd say your font has no glyph for that extended emoticon (U+1F602).

Also, you want to tell Perl that your output device can handle UTF-8, e.g. using binmode STDOUT, ":utf8".  That would get rid of the "Wide character in print" message.

When I check the system's charmap by searching with key '1F602', nothing is found. Now I know if want to print clearly unicode character, there must be related font or glyph in the charmap. Thanks for your kindly help.

#!/usr/bin/perl
length q chmod lc
and  print chr  ord
qq  q q and print chr
ord q  q eq  and  print
chr  oct   hex   ord   uc
q eval ge and print chr oct
oct hex ord qw  q  die  q and
print chr oct oct hex ord qw  q
do q and print chr  oct  oct  hex
ord qw q die q and  print  chr  oct
oct hex ord qw  q die q and print chr
oct oct hex ord qw  q  die  q and print
chr oct oct ord uc qw q  ge  q  and print
chr length q binmode glob and print chr ord
q q eq and print chr  oct  hex  ord q m alarm
and  print  chr ord q q q and print chr oct oct
hex ord q chr uc  and  print  chr  ord  q q q and
print  chr  ord q q eq and print chr ord q q eq and
print chr oct oct hex ord q chop uc and print chr ord
q q eq and print chr oct oct oct ord uc q cmp my lc and
print chr length q binmode glob  and print chr oct ord qw
q do q and print chr oct hex ord q q x eq and print chr oct
oct ord uc qw q for q and print chr oct oct oct ord q open do
and print chr ord q q eq and print chr ord q q eq and print chr
ord q q eq and print chr oct oct oct ord q split -s and print chr
oct oct ord uc qw q fcntl q and print chr oct oct oct ord uc qw q m
q and print chr oct ord qw q do q and print chr length q binmode glob
and print chr ord q q eq and print chr oct hex ord q q eq and print ch
+r
oct ord uc q chr say getprotoent state time uc and print chr oct ord u
+c
q chop uc and print chr ord q q eq and print chr ord uc q lc eval and
print chr ord q q q and print chr oct ord uc q chr uc and print chr
oct ord uc q chop eq uc and print chr oct oct oct ord uc qw q m q
and print chr length q binmode glob and print chr ord q q q and
print chr ord q q eq and print chr oct hex ord uc q eval x ne
and print chr ord qq q flock q and print chr oct hex ord uc
q eval ge and print chr oct hex ord uc qw q y q and print
chr oct oct ord uc qw q grep q and print chr ord q q eq
and print chr oct  oct ord uc qw q gt q and print chr
length q continue vec and  print chr ord q q eq and
print chr ord qq q q and print chr ord qq q q and
print  chr oct oct hex ord qw q die q and print 
chr oct hex ord uc qw q y  q  and  print  chr
oct hex ord uc q my m and print chr oct hex
ord uc q  my m  and print chr oct oct hex
ord qw q dump q and print chr ord q q q
and  print chr length q  continue vec
and  print chr ord q  q q and print
chr ord q q q  and  print chr ord
q q q and  print chr ord q q eq
and print chr oct oct hex ord
qw q do q and print chr ord
q q eq and print chr  oct
oct hex  ord qw q die q
and  print chr length
q  continue vec and
print chr  length
q closedir vec;
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Well, it's presuambly the cut-n-paste mechanics / the browser "having been helpful" in having automatically HTML-entity-encoded the character when pasting it into the browser's text area, not knowing that PerlMonks' code tags sections will simply show the entity encoding literally as is.  (128514 decimal is (U+)1F602 hex)