Perl
Our VMs have Strawberry Perl 5.24 available as part of the Windows
VM, as of the last writing. Licensed as open source under the GPL, it is most often used
to develop mission critical software, and has excellent integration
with markup languages such as HTML, XML, amongst others. Since it is both Object
Oriented as well as procedural, it could be used within a multitude
of programming projects. It includes built in database integration via
its DBI module. Other than DBI, it has thousands of modules, making it
one of the most extensible languages. Due to its interpreted nature,
Perl is similar to Python and would be easy to understand for those
familiar with Python.
Running Perl code
Strawberry Perl has an interactive interpreter, available under Start>
All Programs> Strawberry Perl. Perl commands could be executed by simply typing
perl -e <perl_code_goes here>. E.g. to print a number:
perl -e ‘print 10’
the -e flag is simply to denote that the code is not a file, but code
itself. To run a Perl script, do the following:
perl <script_name_goes_here>
Installing modules
Since Ivy VM’s do not allow outward connections to CPAN’s website, you would have to
install perl modules using the procedure below:
- Check if
CPAN is installed and configured on your VM by typing cpan into a terminal
window:
cpan
- If it asks you if CPAN needs to be configured, type
yes
- Once it is configured, type
cpan to enter the CPAN shell
- In a browser from outside the Ivy VM, search for the proper name of the Perl module you wish to download
search.cpan.org
- E.g. if you want to install the MySQL driver for Perl, type
install DBD::MySQL
This would start the installation of the module. Ivy is able to download modules from CPAN using this method.
* You could manually install a module from its compressed file, once you have transferred the file
into Ivy. However, using the process above downloads the modules’s dependencies as well.
Verifying if a module is installed
Run the following command after installing your module :
perldoc -l DBD::mysql
(e.g. if you installed DBD::mysql)
It should output a path to the installed module.
For more information on Strawberry Perl, please visit the official website.
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ivy, Perl, windows
