26 Jun 2011


Experimenting with new versions of Perl and modules

Many developers have a chicken-and-egg problem when it comes to
upgrading their version of Perl. On one hand, the system version of Perl
cannot be upgraded because it might break existing scripts, on the the
other hand it has been difficult to install your own version of Perl to
see whether an upgrade is safe. The same happens with modules.

Pick your Perl version with App::perlbrew

Use ``App::perlbrew'' to install and switch between multiple versions of
Perl. ``perlbrew'' is easy to install, even if you don't have system
administration privileges, and very easy to use. Once you've installed
and initialised it, you can install whichever version of Perl you wish
to use.

perlbrew install perl-5.12.2
perlbrew install perl-5.10.1

``perlbrew'' will then fetch, compile and install that version of Perl
in your home directory (or other nominated location) and you then you
can just start using that version (``perlbrew'' will do all the path
magic required to make this your default version of Perl).

If you have more than one version of Perl installed by ``perlbrew'' you
can list the verions out:

perlbrew list

and switch between them:

perlbrew switch perl-5.12.2

You can also ask ``perlbrew'' to switch itself off so that you can go
back to using the system Perl.

perlbrew off

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