For a single user under Ubuntu 12.04, or a perl install just for a single user, you can take advantage of that system automagically placing the directory ~/bin/ if it exists at the front of the path. If you do this, no linking or manual fiddling with the path is necessary, and everything can be kept under the home directory.

#!/bin/bash
# doing this manually probably makes more sense :)

if (! [ -d ~/bin/ ]; then mkdir ~/bin/; fi  # create ~/bin/ if it does
+n't already exist
mv ~/localperl/* ~/bin/                 # move the new perl install th
+ere
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See from which path the perl executable will run from the command line:

which perl
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I like using a shebang line #!/usr/bin/env perl to run scripts under the same version shown by which perl unless hard-coding to a particular version is desired.

You'll still want to investigate setting PERL5LIB for module installations. Here is a decent simple explanation.

Perlbrew as mentioned is a good alternative to all this.