When configuring perl you could tell it to install in /opt/perl:

./Configure -des -Dprefix=/opt/perl

Be sure to read the Readme and INSTALL files prior to installation. Your newly built perl will have it's own version of cpan (in the example above under /opt/perl/bin/cpan), it knows where to put modules.

In reply to Re^3: path to perl on umbuntu by marto
in thread path to perl on umbuntu by Anonymous Monk

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