通过在线文档获取帮助
http://www.github.com
https://www.kernel.org/doc/html/latest/
http://httpd.apache.org
http://www.nginx.org
https://mariadb.com/kb/en
https://dev.mysql.com/doc/
http://tomcat.apache.org
https://jenkins.io/zh/doc/
https://kubernetes.io/docs/home/
https://docs.openstack.org/train/
http://www.python.org
http://php.net
Linux官方在线文档和知识库
通过发行版官方的文档光盘或网站可以获得安装指南、部署指南、虚拟化指南等
http://kbase.redhat.com
http://www.redhat.com/docs
http://access.redhat.com
https://help.ubuntu.com/lts/serverguide/index.html
http://tldp.org