Useful Sites

Server World

http://www.server-world.info

Red Hat Docs

https://access.redhat.com/documentation/en/

Linux Test Tools

http://ltp.sourceforge.net/tooltable.php

Excelib (A personal site, from which I learnt a lot about how to handle firewalld)

http://www.excelib.com/

Autotools( how to build from source)

https://www.gnu.org/software/autoconf-archive/

Fedora Firewall Docs

https://fedoraproject.org/wiki/Firewalld?rd=FirewallD

CentOS Old Docs

https://www.centos.org/docs/5/html/5.5/Release_Notes/

Linux Quick Tutorial(Linux basic tools)

http://linuxtools-rst.readthedocs.io/zh_CN/latest/index.html

Stress Docs(Linux stress test tool)

http://people.seas.harvard.edu/~apw/stress/

Ubuntu Chinese Wiki

http://wiki.ubuntu.org.cn

VPS

https://www.hostmama.cc/%E4%BC%98%E8%B4%A8%E5%9B%BD%E5%A4%96vps%E6%8E%A8%E8%8D%90/

A Cool Linux Site

http://distrowatch.com