Perl初学笔记之Hello World
发布时间：2020-12-15 21:56:17 所属栏目：大数据 来源：网络整理
导读：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:Pe
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工作需要开始学Perl,下载个Window版(5.16)的: 下载链接 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~ （编辑：李大同） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |