perl -e 'print "Hello\n";'
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
    LANGUAGE = (unset),
    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").
Hello

I'v tried to do

export LC_ALL=en_US.UTF-8
export LANGUAGE=en_US.UTF-8

And it workis, till I log out. Is there any permanent solution?