如何才能知道自己装了哪些PERL的模块?

CPAN 是 Comprehensive Perl Archive Network 的缩写 . 。它是一个巨大的 Perl 软件收藏库，收集了大量有用的 Perl 模块 (modules) 及其相关的文件。这里主要是使用 Perl-Net-SNMP 模块。

问题描述：

[root@CactiEZ download]# perl -MCPAN -e shell

Can't locate CPAN.pm in @INC (@INC contains: /usr/local/lib/perl5 /usr/local/share/perl5 /usr/lib/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib/perl5 /usr/share/perl5 .).

安装perl模块的步骤如下：

1. Check whether you have 'perl-CPAN‘ package installed in your system.

For checking ‘perl-CPAN’ package run following in your shell.

[root@host13 ~]# rpm -q perl-CPAN

If perl-CPAN package is installed, you will get the output like this

perl-CPAN-1.9402-116.fc13.i686

else, you will get output like this

package perl-CPAN is not installed

and that the case you need to install it. You can install it via using yum, yum install perl-CPAN or from rpm, from “rpm.pbone.net” you can obtain “perl-CPAN rpm’s”.

2. Running the command "perl -MCPAN -e shell" will brought you to a CPAN command prompt

[root@host13 ~]# perl -MCPAN -e shell

Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.9402)

Enter 'h' for help.

cpan[1]>

Note : If this is the first time you’ve run CPAN, it’s going to ask you a series of questions – in most cases the default answer is fine.

If you got an error given below, then you need to confirm the "perl-CPAN" package’s existence in the sytem

3. From this command prompt you can install the perl modules.

Examples:

cpan[1]> install MIME::Entity

cpan[1]> install MIME::Parser

cpan[1]> install Crypt::PasswdMD5

cpan[1]> install Term::ReadPassword

cpan[1]> install Crypt::CBC

cpan[1]> install Crypt::Blowfish

cpan[1]> install Daemon::Generic

cpan[1]> install DateTime

cpan[1]> install SOAP::Lite

Alternative for second and third step.

[root@host13 ~]# perl -MCPAN -e 'install HTML::Template'

[root@host13 ~]# perl -MCPAN -e 'install MIME::Entity'

[root@host13 ~]# perl -MCPAN -e 'install Crypt::PasswdMD5'

[root@host13 ~]# perl -MCPAN -e 'install Term::ReadPassword'

[root@host13 ~]# perl -MCPAN -e 'install Crypt::CBC'

[root@host13 ~]# perl -MCPAN -e 'install Crypt::Blowfish'

[root@host13 ~]# perl -MCPAN -e 'install Daemon::Generic'

[root@host13 ~]# perl -MCPAN -e 'install DateTime'

[root@host13 ~]# perl -MCPAN -e 'install SOAP::Lite'