调用安装在不同路径/目录中的 Perl 模块

我正在编写一个 Perl 脚本 -

I am writing a Perl script which does -

• SSH 到其中一台服务器并使用 Net::OpenSSH Perl 模块执行一些操作.
• 我希望使用 Log::Log4perl Perl 模块将脚本的整个日志存储在某个日志文件中.
• 我想使用 Text::CSV Perl 模块将一些数据写入 CSV 文件.

• SSH to one of the server and do some operation using Net::OpenSSH Perl Module.
• I want to have entire log of the script to be stored in certain log file using Log::Log4perl Perl Module.
• I want to write some data to CSV file using Text::CSV Perl Module.

实际上这三个 Perl Module 已经安装在不同的目录中.

Actually these three Perl Modules have been installed in different directories.

让我们说 -

• Net::OpenSSH 安装在/path/to/lib1
• Log::Log4perl 安装在/path/to/lib2
• Text::CSV 安装在/path/to/lib3

• Net::OpenSSH is installed in /path/to/lib1
• Log::Log4perl is installed in /path/to/lib2
• Text::CSV is installed in /path/to/lib3

由于这些 Perl 模块已经安装在不同的位置，我在 Shebang 行中提到了各自的路径，如下所示:

Since these Perl Modules has been installed in different locations, I am mentioning the respective paths in Shebang line like below:

方法一:

#!/usr/bin/perl -I/path/to/lib1 -I/path/to/lib2 -I/path/to/lib3

use strict;
use warnings;

use Net::OpenSSH;
use Log::Log4perl;
use Text::CSV;

#continue flow of the script
..

这对我来说非常好.

我找到了另一种调用这些 Perl 模块的方法，如下所示:

I found one more method to call these Perl modules like below:

方法二:

#!/usr/bin/perl

use strict;
use warnings;

use lib '/path/to/lib1';
use lib '/path/to/lib2';
use lib '/path/to/lib3';
...

以上方法对我来说也很好用.

Above method also works fine for me.

我通过使用 FindBin 找到了调用这些 Perl 模块的标准方法.

I found the standard way to call these Perl modules by the use of FindBin.

我对它的语法感到困惑.我如何使用 FindBin Perl 模块实现相同的目标.

I am confused with its syntax. How can I achieve same using FindBin Perl Module.

方法 3:

#!/usr/bin/perl

use strict;
use warnings;

use FindBin qw($Bin);
use lib "$Bin/path/to/lib1";
use lib "$Bin/path/to/lib2";
use lib "$Bin/path/to/lib3";
...

这会引发以下错误，当我使用前两种方法(方法 1、方法 2)时不会出现该错误.

This throws me following error which doesn't appears when I use first two methods (Method1, Method2).

unable to load Perl module IO::Pty: Can't locate IO/Pty.pm in @INC ...

我在方法 3 中哪里做错了?

Where I am doing wrong in Method 3?