YASIS is a very detailed sysinfo script that
displays individual stats or grouped info. It only
requires lspci and common tools found in any
distribution. Check the page for example outputs.
It displays distribution/kernel, CPU
count/cache/load, disk/swap/RAM used/free, network
info/speed, CPU temp/fan speeds, X environment
info (wm/de and display info), bandwidth speeds,
and more.