$locale
LANG=en_US.UTF-8
LANGUAGE=
LC_CTYPE="en_US.UTF-8"
LC_NUMERIC=el_GR
LC_TIME=el_GR
LC_COLLATE="en_US.UTF-8"
LC_MONETARY=el_GR
LC_MESSAGES="en_US.UTF-8"
LC_PAPER=el_GR
LC_NAME=el_GR
LC_ADDRESS=el_GR
LC_TELEPHONE=el_GR
LC_MEASUREMENT=el_GR
LC_IDENTIFICATION=el_GR
LC_ALL=

$locale -a
C
C.UTF-8
el_GR
el_GR.iso88597
en_AG
en_AG.utf8
en_AU.utf8
en_BW.utf8
en_CA.utf8
en_DK.utf8
en_GB.utf8
en_HK.utf8
en_IE.utf8
en_IN
en_IN.utf8
en_NG
en_NG.utf8
en_NZ.utf8
en_PH.utf8
en_SG.utf8
en_US.utf8
en_ZA.utf8
en_ZM
en_ZM.utf8
en_ZW.utf8
POSIX