错误：

perl: warning: Setting locale failed.

perl: warning: Please check that your locale settings:         LANGUAGE = (unset),         LC_ALL = (unset),         LANG = "c"     are supported and installed on your system. perl: warning: Falling back to the standard locale ("C").

解决：

export LANG=en_US:zh_CN.UTF-8&&export LC_ALL=C&&perl hello.pl