If you've got privileged access to your machine then you can simply do
perl -MCPAN -e 'install q[File::Find::Rule]'
to install the module. However, if you're an unprivileged user you just need to set the path to somewhere that you can write to e.g
shell> perl -MCPAN -e shell
cpan shell -- CPAN exploration and modules installation (v1.65)
ReadLine support enabled
cpan> o conf makepl_arg PREFIX="/your/path/to/perl/lib"
Or if you're installing from an unpacked tarball, just pass the
PREFIX parameter to the
Makefile.PL e.g
perl Makefile.PL PREFIX=/your/path/to/perl/lib
Then just add
/your/path/to/perl/lib to
@INC either through
lib or the environment variable
$PERL5LIB e.g
use lib '/your/path/to/perl/lib';
use File::Find::Rule;