Karl Agee wrote:
Freebsd 4.11-pre. I am working on learning perl, and have perl 5.00x that is in the base system when I installed 4.10-Release. Since most of the learning materials out there are based on later verisions esp since 5.6.x some of the features arent in this older version.

I am considering upgrading to 5.8.5 via ports, but, dont know if that will break anything.

It won't break anything.

You can have the base install, 5.6.x and 5.8.x installed from ports simultaneously. After installing perl from ports you run

   /usr/local/bin/use.perl port

This will create links to the port install, eg.

   /usr/bin/perl -> /usr/bin/perl5.8.5

And you can go back with

   /usr/local/bin/use.perl system

Which will then replace the link with, eg.

   /usr/bin/perl -> /usr/bin/perl5

These are the limitations:

use.perl can only switch between one installed port-version and the system perl. So if you want to use another port-version (ie. for some reason you want both 5.6.x and 5.8.x) you will have to do the linking manually.

When you install perl-packages they will be installed into the package path of the currently selected perl. So if you use 5.8.5 and install say p5-DBI then this won't be available for the system perl. However, perl looks backward, so 5.8.5 sees packages installed for the system perl.

I haven't found big differences between 5.6 and 5.8, so I'd suggest you use 5.8. The main reason to stick with an older version is that you might develop scripts for platforms where the newer are not available.

Note: If/when you upgrade to 5.x there is no system perl, this is partly to avoid the mess with multiple versions of perl.

Cheers, Erik

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