perl

Although perl is installed globally on all Linux systems, the version can vary across clusters. To avoid complications, MSI recommends users load perl from software modules: 

module load perl/modules.centos7.5.26.1

If you need additional perl modules installed, you can add them using local::lib (included in the MSI perl module):

perl -MCPAN -Mlocal::lib -e 'install <MODULE_NAME>' 

or 

perl -MCPAN -Mlocal::lib -e 'CPAN::install(<MODULE_NAME>)' 

Both of these commands will install modules to $HOME/perl5. If you wish to override the installation path, or change other installation options, see the local::lib documentation. The version of perl provided in the MSI module looks in $HOME/perl5 at runtime for any modules. If you override the installation path, or use a different version of perl, you may need to reconfigure your environment with this command (update the -I path as necessary): 

eval $( perl -I$HOME/perl5 -Mlocal::lib ) 

If you need to install perl modules from CPAN, you may need to load the centos7.5.26.1 perl module: 

         module load perl/modules.centos7.5.26.1