1.    Download the perl from below command

wget http://www.cpan.org/src/5.0/perl-5.14.2.tar.gz

2.    Unzip it

tar -xzf perl-5.14.2.tar.gz

3.    Change working directory to perl

cd perl-5.14.2

4.    Configure it with below commands

./Configure -des -Dprefix=/usr/bin/perl

make
make test
make install

5.    Once you have done this you can check your new version of perl by typing

Perl –V or perl –v

6.    to make this the default perl, you’d probably want to add to your .bashrc

export PATH=/usr/bin/perl:$PATH