perl install modules

If you are missing any of these, you can try running

    perl -MCPAN -e shell

或： echo "install DateTime"|perl -MCPAN -e shell 

或：perl -MCPAN -e"install XML::Simple"

一句搞定，注意替换红色部分为你要装的模块

If you haven't run this before, it will ask you a series of configuration

questions.  The defaults are usually fine.

Once everything is configured, type:

install [package-name]

for each dependency.  Please say 'yes' to install all dependencies of these

dependencies.  Also, if the tests fail, you might try

force install [package-name]

which will ignore the test results.  This isn't a very pretty solution, but it

might be necessary on some platforms.

Also, there have been reports that CPAN on OS X does not work well with ftp

mirrors (perhaps due to OS X's firewall rules).  Choosing an http mirror will

solve this.  If you've already configured CPAN to use an ftp mirror, do the following:

1) Find /usr/lib/perl5/5.8.8/CPAN/Config.pm  One of these is where CPAN is configured.

2) Find an HTTP mirror on this page:

3) Replace the urllist parameter so that it looks something like this:

'urllist' => [q[http://ftp.cuhk.edu.hk/pub/packages/perl/CPAN/]],

4) Try running install [package-name] again.

LWP timout？

You can set the FTP_PASSIVE environment variable before invoking CPAN:

export FTP_PASSIVE=1