Make an account on the SpiderOak website: https://spideroak.com/signup/
For CentOs, download the fedora 65 bit rpm from: https://spideroak.com/opendownload/
sudo rpm -Uvh SpiderOak-5.0.1-1.x86_64.rpm Install the package using rpm
SpiderOak --setup=- Perform first time setup
SpiderOak --batchmode This will perform updates and downloads and exit SpiderOak when complete