By @sskaje
Link: https://sskaje.me/2014/01/lc-ctype-issue/

Meet The Problem

Problem occurs when I’m using ssh working on my Ubuntu/Debian from ‘Terminal‘ of Mac OS X’s own.

I can’t remember the first time I saw

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = "en_US:en",
	LC_ALL = (unset),
	LC_CTYPE = "UTF-8",
	LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory

perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:

LANGUAGE = "en_US:en",

LC_ALL = (unset),

LC_CTYPE = "UTF-8",

LANG = "en_US.UTF-8"

are supported and installed on your system.

perl: warning: Falling back to the standard locale ("C").

locale: Cannot set LC_CTYPE to default locale: No such file or directory

locale: Cannot set LC_ALL to default locale: No such file or directory

LC_CTYPE issue on OS X SOLVED! by @sskaje: https://sskaje.me/2014/01/lc-ctype-issue/

Incoming search terms:

lc_ctype failed using c