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我试图在cygwin中安装Perl模块，例如在answer中没有成功。我有以下错误：cygwin中不可用的cpan
$ perl -MCPAN -e shell
Can't locate CPAN.pm in @INC (you may need to install the CPAN module) (@INC contains: /usr/lib/perl5/site_perl/5.22/x86_64-cygwin-threads /usr/lib/perl5/site_perl/5.22 /usr/lib/perl5/vendor_perl/5.22/x86_64-cygwin-threads /usr/lib/perl5/vendor_perl/5.22 /usr/lib/perl5/5.22/x86_64-cygwin-threads /usr/lib/perl5/5.22 .).
BEGIN failed--compilation aborted.
我如何获得我的cygwin中的cpan？
还有一些额外的细节。其实我的目的是像answer那样安装ack。但是，它没有工作。安装完成后我已经得到了一个错误：
$ ack
Can't locate filetest.pm in @INC (you may need to install the filetest module) (@INC contains: /usr/lib/perl5/site_perl/5.22/x86_64-cygwin-threads /usr/lib/perl5/site_perl/5.22 /usr/lib/perl5/vendor_perl/5.22/x86_64-cygwin-threads /usr/lib/perl5/vendor_perl/5.22 /usr/lib/perl5/5.22/x86_64-cygwin-threads /usr/lib/perl5/5.22 .) at /home/loom/bin/ack line 218.
BEGIN failed--compilation aborted at /home/loom/bin/ack line 218.
以下是我试图找到cpan
$ cpan
-bash: cpan: command not found
$ ll /usr/lib/perl5/5.22/CPAN.pm
ls: cannot access '/usr/lib/perl5/5.22/CPAN.pm': No such file or directory
$ find /usr/ -name *.pm | grep CPAN
/usr/lib/perl5/5.22/CPAN/Meta/Converter.pm
/usr/lib/perl5/5.22/CPAN/Meta/Feature.pm
/usr/lib/perl5/5.22/CPAN/Meta/History.pm
/usr/lib/perl5/5.22/CPAN/Meta/Merge.pm
/usr/lib/perl5/5.22/CPAN/Meta/Prereqs.pm
/usr/lib/perl5/5.22/CPAN/Meta/Requirements.pm
/usr/lib/perl5/5.22/CPAN/Meta/Spec.pm
/usr/lib/perl5/5.22/CPAN/Meta/Validator.pm
/usr/lib/perl5/5.22/CPAN/Meta/YAML.pm
/usr/lib/perl5/5.22/CPAN/Meta.pm
/usr/lib/perl5/5.22/Parse/CPAN/Meta.pm
这是奇怪的... [perl软件包（https://cygwin.com/packages/x86_64/perl/perl-5.22.3-1）应在'/ usr/lib中安装CPAN.pm/perl5/5.22/CPAN.pm'，它位于你的'@ INC'中。如果你做'cpan Foo :: Bar'会发生什么（Foo :: Bar是你想要安装的模块）？ – ThisSuitIsBlackNot
谢谢@ThisSuitIsBlackNot。我已经扩展了这个问题 – Loom
TSIBN已经回答了你的问题：它带有'perl-5.22.3-1'软件包。所以（重新）安装该软件包！ – ikegami