This is my personal recopilation tools for make easy all sysadmin jobs :)
List with all tools:
Speedtest.sh - Test your server speed with others servers around the world
pingtest.sh - Test your ping with others networks around the world
iotest.sh - Test you IOdisk on your system
basicinfo.sh - This script show basic info of your server, very usable for know info on new servers
infotest.sh - This script show advanced info of your server, more exausted info for bofh :)