local::lib Perl module lets you install packages in a dedicated location under your home directory, so that you don't need permission to install in the O2-wide directories in
/usr. On this page, we use the naming convention of
perl5-O2 for the personal Perl package directory, though you can name it whatever you like. We use the
perl/5.30.0 module for setting up
local::lib in the instructions below, but it will also work with other available Perl modules on O2.
You can set up
local::lib so that each time you login, you'll be using a relatively modern version of Perl and
local::lib. That way, the modules you install in your local
perl5-O2 directory today will be available next time you login.
The following three commands will modify your
.bashrc file to always look in your local directory first for Perl packages:
The above commands need to be done only once ever.
Alternatively, you can start up
local::lib manually whenever you want (once per login), to install new packages in your local
perl5-O2 directory, or to use packages in that directory:
That's it! Once you've turned it on, installing Perl modules with tools like
cpanm will automatically install them to your local
perl5-O2 directory. To make modules that you installed to your local library available within a Perl script, add a use statement to the top of your script: