isaac@isaac-KVM:~/.local/share/ov/pkg/isaac_sim-2021.2.1$ ./omni.isaac.sim.post.install.sh 
~/.local/share/ov/pkg/isaac_sim-2021.2.1 ~/.local/share/ov/pkg/isaac_sim-2021.2.1
ln: failed to create symbolic link 'extension_examples/examples': File exists
isaac@isaac-KVM:~/.local/share/ov/pkg/isaac_sim-2021.2.1$