http://www.activestate.com/activeperl/downloads
安装的时候，默认把perl放置到环境变量的PATH中
之后，需要重启电脑，确保环境变量生效
执行perl -version来查看perl的版本
C:UsersAdministrator>perl -version
This is perl 5, version 22, subversion 1 (v5.22.1) built for MSWin32-x64-multi-t
hread
(with 1 registered patch, see perl -V for more detail)
Copyright 1987-2015, Larry Wall
Binary build 2201 [299574] provided by ActiveState http://www.ActiveState.com
Built Jan 4 2016 12:12:58
Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.
Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl". If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.