$ env
TERM_PROGRAM=Apple_Terminal
TERM=xterm-color
SHELL=/bin/bash
TERM_PROGRAM_VERSION=133
__CF_USER_TEXT_ENCODING=0x3B28:0:0
...

$ perl -v

This is perl, v5.8.6 built for darwin-thread-multi-2level
(with 3 registered patches, see perl -V for more detail)
...

$ perl -e 'binmode STDOUT,":utf8"; print "sign: \xa3\n"'              
sign: £