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I-Nex - system Information tool for Linux
Xdiagnose - GUI tools for diagnosing, repairing, and failsafing X.org issues.
cpuid - cpuid dumps detailed information about the CPU(s) gathered from the CPUID instruction, and also...
arandr - ARandR is designed to provide a simple visual front end for XRandR.
lsscsi - Uses information in sysfs (Linux kernels 2.6.
driconf - DRIconf is a configuration applet for the Direct Rendering Infrastructure.