Ubuntu 13.04 server Set Locale Settings

sudo locale-gen en_US.UTF-8

#or

#error on ubuntu server->  perl: warning: Setting locale failed. perl: warning: Please check that your locale settings:

#use this
export  LANGUAGE=en_US.UTF-8
export  LC_ALL=en_US.UTF-8
export  LC_PAPER=en_US.UTF-8
export  LC_ADDRESS=en_US.UTF-8
export  LC_MONETARY=en_US.UTF-8
export  LC_NUMERIC=en_US.UTF-8
export  LC_TELEPHONE=en_US.UTF-8
export  LC_IDENTIFICATION=en_US.UTF-8
export  LC_MEASUREMENT=en_US.UTF-8
export  LC_TIME=en_US.UTF-8
export  LC_NAME=en_US.UTF-8
export  LANG=en_US.UTF-8
export  LC_CTYPE=en_US.UTF-8
export  LC_TIME=en_US.UTF-8
export  LC_NAME=en_US.UTF-8
sudo dpkg-reconfigure locales