Let’s create a directory tutorial under the home directory and copy the directories tinker9/example and tinker9/params here.

zw@Blade:~$ mkdir ~/tutorial; cd ~/tutorial
zw@Blade:~/tutorial$ cp -r ~/tinker9/{example,params} .
zw@Blade:~/tutorial$ ls
example/  params/
zw@Blade:~/tutorial$ cd example; ls
ar94.key  dhfr2.key  dhfr.key  dhfr.seq
ar94.xyz  dhfr2.xyz  dhfr.pdb  dhfr.xyz

This tutorial also assumes the executable tinker9 is in your PATH. If not, prefix the directory to the tinker9 executable.