Install ack on mac osx

mkdir ack
cd ack
wget http://search.cpan.org/CPAN/authors/id/P/PE/PETDANCE/ack-1.86.tar.gz
tar xzvf ack-1.86.tar.gz
wget http://search.cpan.org/CPAN/authors/id/P/PE/PETDANCE/File-Next-1.02.tar.gz
tar zxvf File-Next-1.02.tar.gz
cd File-Next-1.02
perl Makefile.PL
make
make test
sudo make install
cd ../ack-1.86/
perl Makefile.PL
make
make test
sudo make install