install cocoaroch db code example

Example: install cockroachdb linux

#Installation Steps for CockroachDB on Linux

wget -qO- https://binaries.cockroachdb.com/cockroach-v20.1.5.linux-amd64.tgz | tar  xvz
cp -i cockroach-v20.1.5.linux-amd64/cockroach /usr/local/bin/