How to download perl module

It looks for the link that says Download Exit with an error message if there was not parameter on the command line. From the object we can extract the URL of the link using the url method and then using a regular expression we extract the last part of the string. We check if the file already exists and exit the script if the file is there. Effectively downloading the content of the file but keeping it in memory as the content of the page.

Still zipped. After all we are talking about a zip file. To get a perl module installed from source, the first step is to find it. For example, if I need to pull in a sequence reading module from perl so that I can digest fasta files quickly, I would probably look to SeqIO:. This link click here gets me to the information page for SeqIO. On the left, there is a link to download the code. Right-click and copy the link location or address, then paste it after wget into your terminal:.

The above set of commands downloads and installs the perl module locally. However, you still need to add this module to the perl environmental variables to let perl know where to look for the package. So how do we do this? If you are looking for more information about environmental variables in general, here is another blogpost link here explaining these terms and why they are important. Here are some perl-related environment variables that you might need or run into:.

You may also want to explicitly unset these variables. This is especially true in cases where you want to share the code you install with others. Enter perlbrew. Perlbrew requires an already-installed system version of Perl, but it can be as old as 5. Installing older versions of Perl and switching between them use the same steps, e. I use an alternative, plenv , which uses a different mechanism to manage versions of Perl using the bash command shell.

Windows users have the option of berrybrew , which acts much like perlbrew for Strawberry Perl with slightly different options. On most Unix-like systems including macOS , you can then configure, build, test, and install Perl by issuing the following commands:.

Now head on over to Perl. Mark helps professional Perl developers to engineer modern, disciplined applications in the cloud so that they can become experts that write easy-to-maintain code with confidence. He blogs at PhoenixTrap. Something wrong with this article? I have a situation where the server is not connected to internet. However when I do that , I do get info of the author who has written it, not sure if i am missing something here.

Please consider installing the Digest::SHA module. Save my name, email, and website in this browser for the next time I comment. Notify me of followup comments via e-mail. All rights reserved Terms of Service. Installing Perl modules required by various open source software is a routine tasks for sysadmins. PL Checking if your kit is complete BEGIN failed--compilation aborted. Geo Varghese September 26, , am.

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