Perl初学笔记之Hello World
Perl初学笔记之Hello World
发布时间:2016-12-28 来源:查字典编辑
摘要:工作需要开始学Perl,下载个Window版(5.16)的:下载链接http://www.activestate.com/activeper...

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

复制代码 代码如下:

#!/usr/bin/perl

print "Hello,World!n";

运行结果: (很像Python哦)

复制代码 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。

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。

复制代码 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:PerlcpanMetadata'

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)

复制代码 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。

复制代码 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:

复制代码 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。

复制代码 代码如下:

use Path::Class;

C:PerlLearn>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:

复制代码 代码如下:

C:PerlLearn>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~

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