Easy steps to install vcftools package on Mac
Package Information:
Application Name – vcftools
What is vcftools – Not Available for vcftools
Use of vcftools – Tools for working with VCF files
URL – https://vcftools.github.io/
Installation Steps:
- Open Terminal using Spotlight search by pressing  <command+space>. Type terminal and hitEnterkey.
- Now, run following command to install homebrew (brew)
- Install vcftools using brew
brew install vcftools 

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

vcftools is ready to use now!