SAMtools is a suite of programs for interacting with high-throughput sequencing data. SAMTools can be downloaded from http://www.htslib.org/download/

$ cd samtools-1.x # and similarly for bcftools and htslib
$ ./configure --prefix=/where/to/install
$ make
$ make install

In your .bashrc

export PATH=/where/to/install/bin:$PATH # for sh or bash users