Perl初学笔记之Hello World -电脑资料

    这篇文章主要介绍了Perl初学笔记之Hello World,本文是自学Perl的一篇笔记,本文着重讲解了cpan的使用,需要的朋友可以参考下

    工作需要开始学Perl,下载个Window版(5.16)的: 下载链接

    http://www.activestate.com/activeperl/downloads

    安装好了之后，写第一个perl程序

    代码如下:

    #!/usr/bin/perl

    print "Hello,World!\n";

    运行结果: (很像Python哦)

    代码如下:

    c:\Perl>perl HelloWorld.pl

    Hello,World!

    接着学了下:cpan,虽然不知道这家伙具体是干嘛，应该是能安装各种包，9000多种，

Perl初学笔记之Hello World

    命令如下：看第二次输出的结果，应该是类似于数据库的东东吧。

    代码如下:

    c:\Perl>cpan App::cpanminus

    Set up gcc environment - 3.4.5 (mingw-vista special r3)

    CPAN: Term::ANSIColor loaded ok (v4.02)

    CPAN: Storable loaded ok (v2.34)

    Reading ‘C:\Perl\cpan\Metadata‘

    Database was generated on Fri, 07 Mar 2014 13:06:13 GMT

    CPAN: Module::CoreList loaded ok (v2.80)

    App::cpanminus is up to date (1.7001).

    然后用cpanm安装模块，命令如下: (cpanm Module::Name)

    代码如下:

    c:\Perl>cpanm YAML

    Set up gcc environment - 3.4.5 (mingw-vista special r3)

    --> Working on YAML

    Fetching http://www.cpan.org/authors/id/I/IN/INGY/YAML-0.90.tar.gz ... OK

    Configuring YAML-0.90 ... OK

    Building and testing YAML-0.90 ... OK

    Successfully installed YAML-0.90

    1 distribution installed

    如果实在不晓得如何用的话: cpanm --help   //-->会看到很多提示。

    代码如下:

    c:\Perl>cpanm --help

    Set up gcc environment - 3.4.5 (mingw-vista special r3)

    Usage: cpanm [options] Module [...]

    Options:

    -v,--verbose             Turns on chatty output

    -q,--quiet               Turns off the most output

    看上面的安装过程，好像是可以执行cpanm Link,果然是可以:

    代码如下:

    c:\Perl>cpanm http://search.cpan.org/CPAN/authors/id/S/SH/SHARYANTO/Alt-Base-0.0

    2.tar.gz

    Set up gcc environment - 3.4.5 (mingw-vista special r3)

    --> Working on http://search.cpan.org/CPAN/authors/id/S/SH/SHARYANTO/Alt-Base-0.

    02.tar.gz

    Fetching http://search.cpan.org/CPAN/authors/id/S/SH/SHARYANTO/Alt-Base-0.02.tar

    .gz ... OK

    Configuring Alt-Base-0.02 ... OK

    ==> Found dependencies: Alt

    --> Working on Alt

    Fetching http://www.cpan.org/authors/id/I/IN/INGY/Alt-0.04.tar.gz ... OK

    Configuring Alt-0.04 ... OK

    Building and testing Alt-0.04 ... OK

    Successfully installed Alt-0.04

    Building and testing Alt-Base-0.02 ... OK

    Successfully installed Alt-Base-0.02

    2 distributions installed

    然后开始写了个文件操作的脚本，里面有个Path::Class模块，

电脑资料

    代码如下:

    use Path::Class;

    C:\Perl\Learn>perl FindFile.pl

    Can‘t locate Path/Class.pm in @INC (@INC contains: C:/Perl/site/lib/MSWin32-x86-

    multi-thread C:/Perl/site/lib C:/Perl/lib .) at FindFile.pl line 4.

    BEGIN failed--compilation aborted at FindFile.pl line 4.

    看提示，像没有安装该包，安装了下该包，结果果然没报这种错误:

    代码如下:

    C:\Perl\Learn>cpanm Path::Class

    Set up gcc environment - 3.4.5 (mingw-vista special r3)

    --> Working on Path::Class

    Fetching http://www.cpan.org/authors/id/K/KW/KWILLIAMS/Path-Class-0.33.tar.gz ..

    . OK

    Configuring Path-Class-0.33 ... OK

    Building and testing Path-Class-0.33 ... OK

    Successfully installed Path-Class-0.33

    1 distribution installed

    完~