文章来源：http://www.2cto.com/os/201303/198073.html
亲测可用！
perl: warning: Setting locale Failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "en_US:en",
LC_ALL = (unset),51); font-family:宋体; font-size:14px; line-height:28px">
LC_PAPER = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LC_ADDRESS = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LC_MONETARY = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LC_NUMERIC = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LC_TELEPHONE = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LC_IDENTIFICATION = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LC_MEASUREMENT = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LC_TIME = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LC_NAME = "en_US",51); font-family:宋体; font-size:14px; line-height:28px">
LANG = "en_US.UTF-8"
are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
解决办法：
apt-get install language-pack-en-base
/usr/sbin/locale-gen en_US.UTF-8
/usr/sbin/update-locale LANG =en_US.UTF-8
最后：reboot