How do you find the version of an installed Perl module?
如何找到已安装的Perl模块的版本？
This is in an answer down at the bottom, but I figure it important enough to live up here. With these suggestions, I create a function in my .bashrc
这是在底部的答案，但我认为它足够重要，住在这里。有了这些建议，我在.bashrc中创建了一个函数
function perlmodver {
perl -M$1 -e 'print "Version " . $ARGV[0]->VERSION . " of " . $ARGV[0] . \
" is installed.\n"' $1
}
12 个解决方案
#1
53
Why are you trying to get the version of the module? Do you need this from within a program, do you just need the number to pass to another operation, or are you just trying to find out what you have?
你为什么试图获得该模块的版本？你是否需要在一个程序中使用它，你只需要将数字传递给另一个操作，或者你只是想找出你拥有的东西？
I have this built into the cpan (which comes with perl) with the -D switch so you can see the version that you have installed and the current version on CPAN:
我将这个内置到带有-D开关的cpan（带有perl）中，这样您就可以在CPAN上看到已安装的版本和当前版本：
$ cpan -D Text::CSV_XS
Text::CSV_XS
-------------------------------------------------------------------------
Fast 8bit clean version of Text::CSV
H/HM/HMBRAND/Text-CSV_XS-0.54.tgz
/usr/local/lib/perl5/site_perl/5.8.8/darwin-2level/Text/CSV_XS.pm
Installed: 0.32
CPAN: 0.54 Not up to date
H.Merijn Brand (HMBRAND)
h.m.brand@xs4all.nl
If you want to see all of the out-of-date modules, use the -O (capital O) switch:
如果要查看所有过时的模块，请使用-O（大写O）开关：
$ cpan -O Module Name Local CPAN ------------------------------------------------------------------------- Apache::DB 0.1300 0.1400 Apache::SOAP 0.0000 0.7100 Apache::Session 1.8300 1.8700 Apache::SizeLimit 0.0300 0.9100 Apache::XMLRPC::Lite 0.0000 0.7100 ... and so on
If you want to see this for all modules you have installed, try the -a switch to create an autobundle.
如果要查看已安装的所有模块的此信息，请尝试使用-a开关创建自动提示。
#2
52
Most modules (especially ones from The CPAN) have a $VERSION variable:
大多数模块（尤其是来自CPAN的模块）都有一个$ VERSION变量：
perl -MSome::Module -le 'print $Some::Module::VERSION'
#3
29
VERSION is a UNIVERSAL method of all Perl classes. You can use it to get the module version (if it has been set which it usually has).
VERSION是所有Perl类的UNIVERSAL方法。您可以使用它来获取模块版本（如果已经设置了它通常具有）。
Here is a one liner where you only have to add the module name once:
这是一个单行，您只需添加一次模块名称：
perl -le 'eval "require $ARGV[0]" and print $ARGV[0]->VERSION' Some::Module
#4
16
There is a less-typing trick, that works provided your module doesn't have something insane like a Unix timestamp as a version number.
有一个打字较少的技巧，如果您的模块没有疯狂的东西，比如Unix时间戳作为版本号。
perl -MFoo::Bar\ 9999
This works because what it translates to is
这是有效的，因为它转化为
use Foo::Bar 9999;
i.e. a version of Foo::Bar that's at least version 9999 or newer. And what you get is
即Foo :: Bar的版本，至少为9999或更新版本。而你得到的是
Foo::Bar version 9999 required--this is only version 1.1.
BEGIN failed--compilation aborted.
(Neat trick I learned from Matt Trout.)
（我从Matt Trout那里学到了很多技巧。）
#5
8
If you are lucky, the module will have a package variable named $VERSION:
如果幸运的话，该模块将有一个名为$ VERSION的包变量：
$ perl -MCPAN -e 'print "$CPAN::VERSION\n"'
1.9205
This is needed for modules to be distributed on CPAN, but internally developed modules might follow a different convention or none at all.
这需要在CPAN上分发模块，但内部开发的模块可能遵循不同的约定或根本不遵循。
#6
5
Thanks for the answers! I've created a function in my .bashrc to easily find the version of a Perl module:
谢谢你的答案！我在.bashrc中创建了一个函数，以便轻松找到Perl模块的版本：
function perlmodver {
perl -M$1 -e 'print $ARGV[0]->VERSION . "\n"' $1
}
#7
3
Check out the pmtools scripts on CPAN. If you're using a Debian(-based) distro, there's also a handy pmtools package. This includes a script "pmvers" that tells you a module's version. It's quite handy.
查看CPAN上的pmtools脚本。如果您正在使用Debian（基于）的发行版，那么还有一个方便的pmtools包。这包括一个脚本“pmvers”，它告诉你模块的版本。它非常方便。
It does something similar to the various one-liners folks posted, but it's a bit smarter about error handling, and can give you the version of more than one module at once.
它的功能类似于发布的各种单行人员，但它在错误处理方面更为智能，并且可以同时为您提供多个模块的版本。
#8
2
I wrote a small script to report that: perlver.
我写了一个小脚本来报告：perlver。
This is a simple little tool that tells you what version of a module you have installed, and where the .pm file is located. It also ensures the module can be loaded successfully. It automatically converts ‘-’, ‘/’, or ‘\’ to ‘::’, so you can use a pathname or distribution name instead of the canonical module name.
这是一个简单的小工具，可以告诉您已安装的模块版本以及.pm文件所在的位置。它还确保可以成功加载模块。它会自动将' - '，'/'或'\'转换为'::'，因此您可以使用路径名或分布名称而不是规范模块名称。
It assumes that the module defines a $VERSION. If the module doesn't define a $VERSION, it will still tell you where the .pm file is, so you can examine it manually. You can also check several modules at once:
它假定模块定义了$ VERSION。如果模块没有定义$ VERSION，它仍然会告诉你.pm文件的位置，所以你可以手动检查它。您还可以一次检查多个模块：
$ perlver CPAN DBD-Pg Getopt::Long
CPAN 1.7602 is
/usr/lib/perl5/5.8.8/CPAN.pm
DBD::Pg 1.49 is
/usr/lib/perl5/vendor_perl/5.8.8/i686-linux/DBD/Pg.pm
Getopt::Long 2.36 is
/usr/lib/perl5/vendor_perl/5.8.8/Getopt/Long.pm
#9
1
We have the system perl (/usr/bin/perl) in Solaris 10, and above solutions are useless. Some of them report "module.pm is not installed", some of them have no output.
我们在Solaris 10中有系统perl（/ usr / bin / perl），以上解决方案都没用。其中一些报告“未安装module.pm”，其中一些没有输出。
Here is the code which is helpful, which can list all modules and their version.
这是有用的代码，可以列出所有模块及其版本。
#!/usr/bin/perl
use strict;
use ExtUtils::Installed;
my @modules;
my $installed = ExtUtils::Installed->new();
if (scalar(@ARGV) > 0) {
@modules = @ARGV;
} else {
@modules = $installed->modules();
}
print "Module\tVersion\n";
foreach (@modules) {
print $_ . "\t" . $installed->version($_) . "\n";
}
#10
1
Easiest to remember and most robust version for me:
对我来说最容易记住和最强大的版本：
perl -e 'use Search::Elasticsearch; print $Search::Elasticsearch::VERSION;'
#11
0
In addition, for modules that use Exporter.pm, you can get this information with this trick:
此外，对于使用Exporter.pm的模块，您可以使用以下技巧获取此信息：
perl -MSome::Module=99999 -ex
Some::Module version 99999 required--this is only version 1.9205 at ...
For modules that don't use Exporter.pm, a slightly longer trick reports the same information:
对于不使用Exporter.pm的模块，稍微长一点的技巧会报告相同的信息：
perl -e'use Some::Module 99999'
Some::Module version 99999 required--this is only version 1.9205 at ...
#12
0
You can also take a look at App::module::version
您还可以查看App :: module :: version
$ module-version
The version of App::module::version in /home/yourself/perl5/lib/perl5 is 1.004
#1
53
Why are you trying to get the version of the module? Do you need this from within a program, do you just need the number to pass to another operation, or are you just trying to find out what you have?
你为什么试图获得该模块的版本？你是否需要在一个程序中使用它，你只需要将数字传递给另一个操作，或者你只是想找出你拥有的东西？
I have this built into the cpan (which comes with perl) with the -D switch so you can see the version that you have installed and the current version on CPAN:
我将这个内置到带有-D开关的cpan（带有perl）中，这样您就可以在CPAN上看到已安装的版本和当前版本：
$ cpan -D Text::CSV_XS
Text::CSV_XS
-------------------------------------------------------------------------
Fast 8bit clean version of Text::CSV
H/HM/HMBRAND/Text-CSV_XS-0.54.tgz
/usr/local/lib/perl5/site_perl/5.8.8/darwin-2level/Text/CSV_XS.pm
Installed: 0.32
CPAN: 0.54 Not up to date
H.Merijn Brand (HMBRAND)
h.m.brand@xs4all.nl
If you want to see all of the out-of-date modules, use the -O (capital O) switch:
如果要查看所有过时的模块，请使用-O（大写O）开关：
$ cpan -O Module Name Local CPAN ------------------------------------------------------------------------- Apache::DB 0.1300 0.1400 Apache::SOAP 0.0000 0.7100 Apache::Session 1.8300 1.8700 Apache::SizeLimit 0.0300 0.9100 Apache::XMLRPC::Lite 0.0000 0.7100 ... and so on
If you want to see this for all modules you have installed, try the -a switch to create an autobundle.
如果要查看已安装的所有模块的此信息，请尝试使用-a开关创建自动提示。
#2
52
Most modules (especially ones from The CPAN) have a $VERSION variable:
大多数模块（尤其是来自CPAN的模块）都有一个$ VERSION变量：
perl -MSome::Module -le 'print $Some::Module::VERSION'
#3
29
VERSION is a UNIVERSAL method of all Perl classes. You can use it to get the module version (if it has been set which it usually has).
VERSION是所有Perl类的UNIVERSAL方法。您可以使用它来获取模块版本（如果已经设置了它通常具有）。
Here is a one liner where you only have to add the module name once:
这是一个单行，您只需添加一次模块名称：
perl -le 'eval "require $ARGV[0]" and print $ARGV[0]->VERSION' Some::Module
#4
16
There is a less-typing trick, that works provided your module doesn't have something insane like a Unix timestamp as a version number.
有一个打字较少的技巧，如果您的模块没有疯狂的东西，比如Unix时间戳作为版本号。
perl -MFoo::Bar\ 9999
This works because what it translates to is
这是有效的，因为它转化为
use Foo::Bar 9999;
i.e. a version of Foo::Bar that's at least version 9999 or newer. And what you get is
即Foo :: Bar的版本，至少为9999或更新版本。而你得到的是
Foo::Bar version 9999 required--this is only version 1.1.
BEGIN failed--compilation aborted.
(Neat trick I learned from Matt Trout.)
（我从Matt Trout那里学到了很多技巧。）
#5
8
If you are lucky, the module will have a package variable named $VERSION:
如果幸运的话，该模块将有一个名为$ VERSION的包变量：
$ perl -MCPAN -e 'print "$CPAN::VERSION\n"'
1.9205
This is needed for modules to be distributed on CPAN, but internally developed modules might follow a different convention or none at all.
这需要在CPAN上分发模块，但内部开发的模块可能遵循不同的约定或根本不遵循。
#6
5
Thanks for the answers! I've created a function in my .bashrc to easily find the version of a Perl module:
谢谢你的答案！我在.bashrc中创建了一个函数，以便轻松找到Perl模块的版本：
function perlmodver {
perl -M$1 -e 'print $ARGV[0]->VERSION . "\n"' $1
}
#7
3
Check out the pmtools scripts on CPAN. If you're using a Debian(-based) distro, there's also a handy pmtools package. This includes a script "pmvers" that tells you a module's version. It's quite handy.
查看CPAN上的pmtools脚本。如果您正在使用Debian（基于）的发行版，那么还有一个方便的pmtools包。这包括一个脚本“pmvers”，它告诉你模块的版本。它非常方便。
It does something similar to the various one-liners folks posted, but it's a bit smarter about error handling, and can give you the version of more than one module at once.
它的功能类似于发布的各种单行人员，但它在错误处理方面更为智能，并且可以同时为您提供多个模块的版本。
#8
2
I wrote a small script to report that: perlver.
我写了一个小脚本来报告：perlver。
This is a simple little tool that tells you what version of a module you have installed, and where the .pm file is located. It also ensures the module can be loaded successfully. It automatically converts ‘-’, ‘/’, or ‘\’ to ‘::’, so you can use a pathname or distribution name instead of the canonical module name.
这是一个简单的小工具，可以告诉您已安装的模块版本以及.pm文件所在的位置。它还确保可以成功加载模块。它会自动将' - '，'/'或'\'转换为'::'，因此您可以使用路径名或分布名称而不是规范模块名称。
It assumes that the module defines a $VERSION. If the module doesn't define a $VERSION, it will still tell you where the .pm file is, so you can examine it manually. You can also check several modules at once:
它假定模块定义了$ VERSION。如果模块没有定义$ VERSION，它仍然会告诉你.pm文件的位置，所以你可以手动检查它。您还可以一次检查多个模块：
$ perlver CPAN DBD-Pg Getopt::Long
CPAN 1.7602 is
/usr/lib/perl5/5.8.8/CPAN.pm
DBD::Pg 1.49 is
/usr/lib/perl5/vendor_perl/5.8.8/i686-linux/DBD/Pg.pm
Getopt::Long 2.36 is
/usr/lib/perl5/vendor_perl/5.8.8/Getopt/Long.pm
#9
1
We have the system perl (/usr/bin/perl) in Solaris 10, and above solutions are useless. Some of them report "module.pm is not installed", some of them have no output.
我们在Solaris 10中有系统perl（/ usr / bin / perl），以上解决方案都没用。其中一些报告“未安装module.pm”，其中一些没有输出。
Here is the code which is helpful, which can list all modules and their version.
这是有用的代码，可以列出所有模块及其版本。
#!/usr/bin/perl
use strict;
use ExtUtils::Installed;
my @modules;
my $installed = ExtUtils::Installed->new();
if (scalar(@ARGV) > 0) {
@modules = @ARGV;
} else {
@modules = $installed->modules();
}
print "Module\tVersion\n";
foreach (@modules) {
print $_ . "\t" . $installed->version($_) . "\n";
}
#10
1
Easiest to remember and most robust version for me:
对我来说最容易记住和最强大的版本：
perl -e 'use Search::Elasticsearch; print $Search::Elasticsearch::VERSION;'
#11
0
In addition, for modules that use Exporter.pm, you can get this information with this trick:
此外，对于使用Exporter.pm的模块，您可以使用以下技巧获取此信息：
perl -MSome::Module=99999 -ex
Some::Module version 99999 required--this is only version 1.9205 at ...
For modules that don't use Exporter.pm, a slightly longer trick reports the same information:
对于不使用Exporter.pm的模块，稍微长一点的技巧会报告相同的信息：
perl -e'use Some::Module 99999'
Some::Module version 99999 required--this is only version 1.9205 at ...
#12
0
You can also take a look at App::module::version
您还可以查看App :: module :: version
$ module-version
The version of App::module::version in /home/yourself/perl5/lib/perl5 is 1.004