How can I tell what version of Perl I have?

February 28, 2021 Off By idswater

How can I tell what version of Perl I have?

3 quick ways to find out the version number of an installed Perl module from the terminal

  1. Use CPAN with the -D flag. cpan -D Moose.
  2. Use a Perl one-liner to load and print the module version number.
  3. Use Perldoc with the -m flag to load the module’s source code and extract the version number.

What is the current version of Perl?

5.34.0
Perl 5.34. 0 is the current stable version of Perl.

How do I install a specific version of Perl?

Installing

  1. Log into your server via SSH.
  2. Decompress this file.
  3. Change into the new directory.
  4. Run the configure command for the directory you wish to install into.
  5. Next, run make, make test, and finally make install.
  6. Add code to your .
  7. source the .
  8. Finally, check to confirm the new version is being used.

How do I tell what Perl modules are installed?

You need to use instmodsh (interactive inventory for installed Perl modules) command to find out what modules already installed on my system. instmodsh command provides an interactive shell type interface to query details of locally installed Perl modules.

How do I install a package in Perl?

For each of the modules that you downloaded, complete the following steps:

  1. Unpack it into a writable directory.
  2. Run the Perl configure command: perl Makefile.pl .
  3. Run the make command.
  4. Run the make test command. Do not proceed until this command completes successfully.
  5. Run the make install command.

Is perl dead?

Apple has announced officially that all interpreters are deprecated (Perl, Python, Ruby) and will not be available with the OS in the next version of MacOS. RedHat has announced officially that python is not setup out-of-the-box in RHEL 8 and future versions.

How do I run a perl script?

  1. Write and Run Your First Script. All you need to write Perl programs is a text editor.
  2. Write Your Script. Create a new text file and type the following exactly as shown: #!usr/bin/perl.
  3. Run Your Script. Back at the command prompt, change to the directory where you saved the Perl script.

What is Cpanminus?

cpanm from App::cpanminus is a script to get, unpack, build and install modules from CPAN. It’s dependency free (can bootstrap itself) and requires zero configuration (install instructions). cpan from CPAN has been distributed with Perl since 1997 (5.004).

How do I remove a Perl module?

6 Answers

  1. Install App::cpanminus from CPAN (use: cpan App::cpanminus for this).
  2. Type cpanm –uninstall Module::Name (note the ” m “) to uninstall the module with cpanminus.

How do I install a Perl module manually?

For each of the modules that you downloaded, complete the following steps:

  1. Unpack it into a writeable directory.
  2. Run the Perl configure command: perl Makefile.pl .
  3. Run the make command.
  4. Run the make test command. Do not proceed until this command completes successfully.
  5. Run the make install command.

Where does Perl install CPAN?

CPAN doesn’t install modules. It’s a repository….Perl specifies three sets of installation locations.

  • perl , for modules included with Perl itself.
  • vendor , for modules installed by the provider of your perl binary.
  • site , for modules installed using cpan .

What to do if Perl 6 is not in CPAN?

If you report a bug in an unmaintained version, you are likely to be advised to upgrade to a maintained version which fixes the bug, or to await a fix in a maintained version. No fix will be provided for the unmaintained version. Perl 6 or Parrot are not yet in CPAN.

What’s the difference between Perl version and version.pm?

Perl::Version provides a simple interface for parsing, manipulating and formatting Perl version strings. Unlike version.pm (which concentrates on parsing and comparing version strings) Perl::Version is designed for cases where you’d like to parse a version, modify it and get back the modified version formatted like the original.

Which is the safest way to pass a version string in Perl?

The safest option is to pass a regular string to Perl::Version->new (). By convention if a version string has suffix that consists of an underscore followed by one or more digits it represents an alpha or developer release. CPAN treats modules with such version strings specially to reflect their alpha status.

What are the first three components of Perl version?

By Perl convention the first three components are named ‘revision’, ‘version’ and ‘subversion’: Perl::Version follows that convention. Any component may be accessed by passing a number from 0 to N-1 to the component or increment but for convenience the first three components are aliased as revision, version and subversion.