cat /etc/locale.gen
# Configuration file for locale-gen
#
# lists of locales that are to be generated by the locale-gen command.
#
# Each line is of the form:
#
#     <locale> <charset>
#
#  where <locale> is one of the locales given in /usr/share/i18n/locales
#  and <charset> is one of the character sets listed in /usr/share/i18n/charmaps
#
#  Examples:
#  en_US ISO-8859-1
  #en_US.UTF-8 UTF-8
#  de_DE ISO-8859-1
#  de_DE@euro ISO-8859-15
#
#  The locale-gen command will generate all the locales,
#  placing them in /usr/lib/locale.
#
#  A list of supported locales is included in this file.
#  Uncomment the ones you need.
#
#aa_DJ.UTF-8 UTF-8
#aa_DJ ISO-8859-1
#aa_ER UTF-8
#aa_ER@saaho UTF-8
#aa_ET UTF-8
#af_ZA.UTF-8 UTF-8
#af_ZA ISO-8859-1
#ak_GH UTF-8
#am_ET UTF-8
#an_ES.UTF-8 UTF-8
#an_ES ISO-8859-15
#anp_IN UTF-8
#ar_AE.UTF-8 UTF-8
#ar_AE ISO-8859-6
#ar_BH.UTF-8 UTF-8
#ar_BH ISO-8859-6
#ar_DZ.UTF-8 UTF-8
#ar_DZ ISO-8859-6
#ar_EG.UTF-8 UTF-8
#ar_EG ISO-8859-6
#ar_IN UTF-8
#ar_IQ.UTF-8 UTF-8
#ar_IQ ISO-8859-6
#ar_JO.UTF-8 UTF-8
#ar_JO ISO-8859-6
#ar_KW.UTF-8 UTF-8
#ar_KW ISO-8859-6
#ar_LB.UTF-8 UTF-8
#ar_LB ISO-8859-6
#ar_LY.UTF-8 UTF-8
#ar_LY ISO-8859-6
#ar_MA.UTF-8 UTF-8
#ar_MA ISO-8859-6
#ar_OM.UTF-8 UTF-8
#ar_OM ISO-8859-6
#ar_QA.UTF-8 UTF-8
#ar_QA ISO-8859-6
#ar_SA.UTF-8 UTF-8
#ar_SA ISO-8859-6
#ar_SD.UTF-8 UTF-8
#ar_SD ISO-8859-6
#ar_SS UTF-8
#ar_SY.UTF-8 UTF-8
#ar_SY ISO-8859-6
#ar_TN.UTF-8 UTF-8
#ar_TN ISO-8859-6
#ar_YE.UTF-8 UTF-8
#ar_YE ISO-8859-6
#ayc_PE UTF-8
#az_AZ UTF-8
#as_IN UTF-8
#ast_ES.UTF-8 UTF-8
#ast_ES ISO-8859-15
#be_BY.UTF-8 UTF-8
#be_BY CP1251
#be_BY@latin UTF-8
#bem_ZM UTF-8
#ber_DZ UTF-8
#ber_MA UTF-8
#bg_BG.UTF-8 UTF-8
#bg_BG CP1251
#bh_IN.UTF-8 UTF-8
#bho_IN UTF-8
#bn_BD UTF-8
#bn_IN UTF-8
#bo_CN UTF-8
#bo_IN UTF-8
#br_FR.UTF-8 UTF-8
#br_FR ISO-8859-1
#br_FR@euro ISO-8859-15
#brx_IN UTF-8
#bs_BA.UTF-8 UTF-8
#bs_BA ISO-8859-2
#byn_ER UTF-8
#ca_AD.UTF-8 UTF-8
#ca_AD ISO-8859-15
#ca_ES.UTF-8 UTF-8
#ca_ES ISO-8859-1
#ca_ES@euro ISO-8859-15
#ca_FR.UTF-8 UTF-8
#ca_FR ISO-8859-15
#ca_IT.UTF-8 UTF-8
#ca_IT ISO-8859-15
#ce_RU UTF-8
#cmn_TW UTF-8
#crh_UA UTF-8
#cs_CZ.UTF-8 UTF-8
#cs_CZ ISO-8859-2
#csb_PL UTF-8
#cv_RU UTF-8
#cy_GB.UTF-8 UTF-8
#cy_GB ISO-8859-14
#da_DK.UTF-8 UTF-8
#da_DK ISO-8859-1
#de_AT.UTF-8 UTF-8
#de_AT ISO-8859-1
#de_AT@euro ISO-8859-15
#de_BE.UTF-8 UTF-8
#de_BE ISO-8859-1
#de_BE@euro ISO-8859-15
#de_CH.UTF-8 UTF-8
#de_CH ISO-8859-1
#de_DE.UTF-8 UTF-8
#de_DE ISO-8859-1
#de_DE@euro ISO-8859-15
#de_LU.UTF-8 UTF-8
#de_LU ISO-8859-1
#de_LU@euro ISO-8859-15
#doi_IN UTF-8
#dv_MV UTF-8
#dz_BT UTF-8
#el_GR.UTF-8 UTF-8
#el_GR ISO-8859-7
#el_CY.UTF-8 UTF-8
#el_CY ISO-8859-7
#en_AG UTF-8
#en_AU.UTF-8 UTF-8
#en_AU ISO-8859-1
#en_BW.UTF-8 UTF-8
#en_BW ISO-8859-1
#en_CA.UTF-8 UTF-8
#en_CA ISO-8859-1
#en_DK.UTF-8 UTF-8
#en_DK ISO-8859-1
#en_GB.UTF-8 UTF-8
#en_GB ISO-8859-1
#en_HK.UTF-8 UTF-8
#en_HK ISO-8859-1
#en_IE.UTF-8 UTF-8
#en_IE ISO-8859-1
#en_IE@euro ISO-8859-15
#en_IN UTF-8
#en_NG UTF-8
#en_NZ.UTF-8 UTF-8
#en_NZ ISO-8859-1
#en_PH.UTF-8 UTF-8
#en_PH ISO-8859-1
#en_SG.UTF-8 UTF-8
#en_SG ISO-8859-1
en_US.UTF-8 UTF-8
#en_US ISO-8859-1
#en_ZA.UTF-8 UTF-8
#en_ZA ISO-8859-1
#en_ZM UTF-8
#en_ZW.UTF-8 UTF-8
#en_ZW ISO-8859-1
#es_AR.UTF-8 UTF-8
#es_AR ISO-8859-1
#es_BO.UTF-8 UTF-8
#es_BO ISO-8859-1
#es_CL.UTF-8 UTF-8
#es_CL ISO-8859-1
#es_CO.UTF-8 UTF-8
#es_CO ISO-8859-1
#es_CR.UTF-8 UTF-8
#es_CR ISO-8859-1
#es_CU UTF-8
#es_DO.UTF-8 UTF-8
#es_DO ISO-8859-1
#es_EC.UTF-8 UTF-8
#es_EC ISO-8859-1
#es_ES.UTF-8 UTF-8
#es_ES ISO-8859-1
#es_ES@euro ISO-8859-15
#es_GT.UTF-8 UTF-8
#es_GT ISO-8859-1
#es_HN.UTF-8 UTF-8
#es_HN ISO-8859-1
#es_MX.UTF-8 UTF-8
#es_MX ISO-8859-1
#es_NI.UTF-8 UTF-8
#es_NI ISO-8859-1
#es_PA.UTF-8 UTF-8
#es_PA ISO-8859-1
#es_PE.UTF-8 UTF-8
#es_PE ISO-8859-1
#es_PR.UTF-8 UTF-8
#es_PR ISO-8859-1
#es_PY.UTF-8 UTF-8
#es_PY ISO-8859-1
#es_SV.UTF-8 UTF-8
#es_SV ISO-8859-1
#es_US.UTF-8 UTF-8
#es_US ISO-8859-1
#es_UY.UTF-8 UTF-8
#es_UY ISO-8859-1
#es_VE.UTF-8 UTF-8
#es_VE ISO-8859-1
#et_EE.UTF-8 UTF-8
#et_EE ISO-8859-1
#et_EE.ISO-8859-15 ISO-8859-15
#eu_ES.UTF-8 UTF-8
#eu_ES ISO-8859-1
#eu_ES@euro ISO-8859-15
#fa_IR UTF-8
#ff_SN UTF-8
#fi_FI.UTF-8 UTF-8
#fi_FI ISO-8859-1
#fi_FI@euro ISO-8859-15
#fil_PH UTF-8
#fo_FO.UTF-8 UTF-8
#fo_FO ISO-8859-1
#fr_BE.UTF-8 UTF-8
#fr_BE ISO-8859-1
#fr_BE@euro ISO-8859-15
#fr_CA.UTF-8 UTF-8
#fr_CA ISO-8859-1
#fr_CH.UTF-8 UTF-8
#fr_CH ISO-8859-1
#fr_FR.UTF-8 UTF-8
#fr_FR ISO-8859-1
#fr_FR@euro ISO-8859-15
#fr_LU.UTF-8 UTF-8
#fr_LU ISO-8859-1
#fr_LU@euro ISO-8859-15
#fur_IT UTF-8
#fy_NL UTF-8
#fy_DE UTF-8
#ga_IE.UTF-8 UTF-8
#ga_IE ISO-8859-1
#ga_IE@euro ISO-8859-15
#gd_GB.UTF-8 UTF-8
#gd_GB ISO-8859-15
#gez_ER UTF-8
#gez_ER@abegede UTF-8
#gez_ET UTF-8
#gez_ET@abegede UTF-8
#gl_ES.UTF-8 UTF-8
#gl_ES ISO-8859-1
#gl_ES@euro ISO-8859-15
#gu_IN UTF-8
#gv_GB.UTF-8 UTF-8
#gv_GB ISO-8859-1
#ha_NG UTF-8
#hak_TW UTF-8
#he_IL.UTF-8 UTF-8
#he_IL ISO-8859-8
#hi_IN UTF-8
#hne_IN UTF-8
#hr_HR.UTF-8 UTF-8
#hr_HR ISO-8859-2
#hsb_DE ISO-8859-2
#hsb_DE.UTF-8 UTF-8
#ht_HT UTF-8
#hu_HU.UTF-8 UTF-8
#hu_HU ISO-8859-2
#hy_AM UTF-8
#hy_AM.ARMSCII-8 ARMSCII-8
#ia_FR UTF-8
#id_ID.UTF-8 UTF-8
#id_ID ISO-8859-1
#ig_NG UTF-8
#ik_CA UTF-8
#is_IS.UTF-8 UTF-8
#is_IS ISO-8859-1
#it_CH.UTF-8 UTF-8
#it_CH ISO-8859-1
#it_IT.UTF-8 UTF-8
#it_IT ISO-8859-1
#it_IT@euro ISO-8859-15
#iu_CA UTF-8
#iw_IL.UTF-8 UTF-8
#iw_IL ISO-8859-8
#ja_JP.EUC-JP EUC-JP
#ja_JP.UTF-8 UTF-8
#ka_GE.UTF-8 UTF-8
#ka_GE GEORGIAN-PS
#kk_KZ.UTF-8 UTF-8
#kk_KZ PT154
#kl_GL.UTF-8 UTF-8
#kl_GL ISO-8859-1
#km_KH UTF-8
#kn_IN UTF-8
#ko_KR.EUC-KR EUC-KR
#ko_KR.UTF-8 UTF-8
#kok_IN UTF-8
#ks_IN UTF-8
#ks_IN@devanagari UTF-8
#ku_TR.UTF-8 UTF-8
#ku_TR ISO-8859-9
#kw_GB.UTF-8 UTF-8
#kw_GB ISO-8859-1
#ky_KG UTF-8
#lb_LU UTF-8
#lg_UG.UTF-8 UTF-8
#lg_UG ISO-8859-10
#li_BE UTF-8
#li_NL UTF-8
#lij_IT UTF-8
#lo_LA UTF-8
#lt_LT.UTF-8 UTF-8
#lt_LT ISO-8859-13
#lv_LV.UTF-8 UTF-8
#lv_LV ISO-8859-13
#lzh_TW UTF-8
#mag_IN UTF-8
#mai_IN UTF-8
#mg_MG.UTF-8 UTF-8
#mg_MG ISO-8859-15
#mhr_RU UTF-8
#mi_NZ.UTF-8 UTF-8
#mi_NZ ISO-8859-13
#mk_MK.UTF-8 UTF-8
#mk_MK ISO-8859-5
ml_IN UTF-8
#mn_MN UTF-8
#mni_IN UTF-8
#mr_IN UTF-8
#ms_MY.UTF-8 UTF-8
#ms_MY ISO-8859-1
#mt_MT.UTF-8 UTF-8
#mt_MT ISO-8859-3
#my_MM UTF-8
#nan_TW UTF-8
#nan_TW@latin UTF-8
#nb_NO.UTF-8 UTF-8
#nb_NO ISO-8859-1
#nds_DE UTF-8
#nds_NL UTF-8
#ne_NP UTF-8
#nhn_MX UTF-8
#niu_NU UTF-8
#niu_NZ UTF-8
#nl_AW UTF-8
#nl_BE.UTF-8 UTF-8
#nl_BE ISO-8859-1
#nl_BE@euro ISO-8859-15
#nl_NL.UTF-8 UTF-8
#nl_NL ISO-8859-1
#nl_NL@euro ISO-8859-15
#nn_NO.UTF-8 UTF-8
#nn_NO ISO-8859-1
#nr_ZA UTF-8
#nso_ZA UTF-8
#oc_FR.UTF-8 UTF-8
#oc_FR ISO-8859-1
#om_ET UTF-8
#om_KE.UTF-8 UTF-8
#om_KE ISO-8859-1
#or_IN UTF-8
#os_RU UTF-8
#pa_IN UTF-8
#pa_PK UTF-8
#pap_AN UTF-8
#pap_AW UTF-8
#pap_CW UTF-8
#pl_PL.UTF-8 UTF-8
#pl_PL ISO-8859-2
#ps_AF UTF-8
#pt_BR.UTF-8 UTF-8
#pt_BR ISO-8859-1
#pt_PT.UTF-8 UTF-8
#pt_PT ISO-8859-1
#pt_PT@euro ISO-8859-15
#quz_PE UTF-8
#raj_IN UTF-8
#ro_RO.UTF-8 UTF-8
#ro_RO ISO-8859-2
#ru_RU.KOI8-R KOI8-R
#ru_RU.UTF-8 UTF-8
#ru_RU ISO-8859-5
#ru_UA.UTF-8 UTF-8
#ru_UA KOI8-U
#rw_RW UTF-8
#sa_IN UTF-8
#sat_IN UTF-8
#sc_IT UTF-8
#sd_IN UTF-8
#sd_IN@devanagari UTF-8
#se_NO UTF-8
#shs_CA UTF-8
#si_LK UTF-8
#sid_ET UTF-8
#sk_SK.UTF-8 UTF-8
#sk_SK ISO-8859-2
#sl_SI.UTF-8 UTF-8
#sl_SI ISO-8859-2
#so_DJ.UTF-8 UTF-8
#so_DJ ISO-8859-1
#so_ET UTF-8
#so_KE.UTF-8 UTF-8
#so_KE ISO-8859-1
#so_SO.UTF-8 UTF-8
#so_SO ISO-8859-1
#sq_AL.UTF-8 UTF-8
#sq_AL ISO-8859-1
#sq_MK UTF-8
#sr_ME UTF-8
#sr_RS UTF-8
#sr_RS@latin UTF-8
#ss_ZA UTF-8
#st_ZA.UTF-8 UTF-8
#st_ZA ISO-8859-1
#sv_FI.UTF-8 UTF-8
#sv_FI ISO-8859-1
#sv_FI@euro ISO-8859-15
#sv_SE.UTF-8 UTF-8
#sv_SE ISO-8859-1
#sw_KE UTF-8
#sw_TZ UTF-8
#szl_PL UTF-8
#ta_IN UTF-8
#ta_LK UTF-8
#te_IN UTF-8
#tg_TJ.UTF-8 UTF-8
#tg_TJ KOI8-T
#th_TH.UTF-8 UTF-8
#th_TH TIS-620
#the_NP UTF-8
#ti_ER UTF-8
#ti_ET UTF-8
#tig_ER UTF-8
#tk_TM UTF-8
#tl_PH.UTF-8 UTF-8
#tl_PH ISO-8859-1
#tn_ZA UTF-8
#tr_CY.UTF-8 UTF-8
#tr_CY ISO-8859-9
#tr_TR.UTF-8 UTF-8
#tr_TR ISO-8859-9
#ts_ZA UTF-8
#tt_RU UTF-8
#tt_RU@iqtelif UTF-8
#tu_IN.UTF-8 UTF-8
#ug_CN UTF-8
#uk_UA.UTF-8 UTF-8
#uk_UA KOI8-U
#unm_US UTF-8
#ur_IN UTF-8
#ur_PK UTF-8
#uz_UZ.UTF-8 UTF-8
#uz_UZ ISO-8859-1
#uz_UZ@cyrillic UTF-8
#ve_ZA UTF-8
#vi_VN UTF-8
#wa_BE ISO-8859-1
#wa_BE@euro ISO-8859-15
#wa_BE.UTF-8 UTF-8
#wae_CH UTF-8
#wal_ET UTF-8
#wo_SN UTF-8
#xh_ZA.UTF-8 UTF-8
#xh_ZA ISO-8859-1
#yi_US.UTF-8 UTF-8
#yi_US CP1255
#yo_NG UTF-8
#yue_HK UTF-8
#zh_CN.GB18030 GB18030
#zh_CN.GBK GBK
#zh_CN.UTF-8 UTF-8
#zh_CN GB2312
#zh_HK.UTF-8 UTF-8
#zh_HK BIG5-HKSCS
#zh_SG.UTF-8 UTF-8
#zh_SG.GBK GBK
#zh_SG GB2312
#zh_TW.EUC-TW EUC-TW
#zh_TW.UTF-8 UTF-8
#zh_TW BIG5
#zu_ZA.UTF-8 UTF-8
#zu_ZA ISO-8859-1
----------------
locale -a
C
en_US.utf8
ml_IN
ml_IN.utf8
POSIX
----------------
localectl list-locales
en_US.utf8
ml_IN
ml_IN.utf8