![]() ![]() In general, any module can have multiple streams. ![]() So the previous output explains why yum installed Perl 5.26.3 and not one of the 5.24 micro versions. The flag marks a default stream, which is the one installed if you do not explicitly enable a different stream. These are called streams in the modularity world, and they denote independent variants of the same software stack, usually different versions. The output shows that a module is available for both Perl 5.24 and Perl 5.26. Perl-YAML 1.24 common Perl parser for YAML Perl-FCGI 0.78 common FastCGI Perl bindings Perl-DBI 1.641 common A database access API for Perl Perl-DBD-SQLite 1.58 common SQLite DBI driver Perl-DBD-Pg 3.7 common A PostgreSQL interface for Perl Perl-DBD-MySQL 4.046 common A MySQL interface for Perl Perl-App-cpanminus 1.7044 common Get, unpack, build and install CPAN mod Perl 5.26 common, Practical Extraction and Report Languag Perl 5.24 common, Practical Extraction and Report Languag Last metadata expiration check: 1:45:10 ago on Tue 04:18:01 PM CEST. Exploring streams in RHEL 8įind out what Perl modules are available using the yum module list command: # yum module list Not all modules are compatible with other modules.įor the remainder of this article, we will look at how to install Perl modules using streams. Most often, you might have an existing application that depends on a combination of modules, and some don't work with updated versions of Perl. But what if you want to try a different version? There are various reasons for enabling another version of your software. If you are fine with that, then you don't need to worry about modules. This is the default version supported for the next 10 years. The output shows that you have Perl 5.26.3. Next, check which version of Perl you have: $ perl -V:version Last metadata expiration check: 1:37:36 ago on Tue 04:18:01 PM CEST. Start by installing Perl in a simple manner: # yum -allowerasing install perl I will refer to the "modularity module" for the Red Hat Enterprise Linux type and the "CPAN module" for the Perl type. ![]() ![]() Note: The term module in this article is used for both RHEL modules and Perl modules. This article shows you how to manage Perl as a module, as well as how to manage the CPAN modules provided by Perl, in RHEL 8. You don't need to add anything in your ~/.bashrc file, the Sherlock perl module will automatically create everything that is required so you can directly run a command to install Perl modules locally.Red Hat Enterprise Linux in version 8 (RHEL 8) comes with modules, a packaging concept that allows system administrators to select the desired software version from multiple packaged versions. local::lib allows users to install Perl modules in the directory of their choice (typically their home directory) without administrative privileges.īoth are already installed on Sherlock, and are automatically enabled and configured when you load the perl module.It has many great features, including uninstalling modules. App::cpanminus is a popular alternative CPAN client that can be used to manage Perl distributions.To install Perl modules from CPAN, we recommend using the (provided) App::cpanminus module and local::lib modules: For more complete documentation about Perl in general, please see the Perl documentation. The following documentation specifically intended for using Perl on Sherlock. It is searchable at or and mirrored in over 270 locations around the world. The Comprehensive Perl Archive Network (CPAN 1) is an archive of over 25,000 distributions of software written in Perl, as well as documentation for it. Perl provides a framework allowing users to easily extend the language by installing new modules in their local environment. Originally developed by Larry Wall in 1987 as a general-purpose Unix scripting language to make report processing easier, it has since undergone many changes and revisions. Perl is a high-level, general-purpose, interpreted, dynamic programming language. ![]()
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