[ubuntu]How to check my System Specifications

[Problem]
How do I check my system specifications(or hardware configuration)?

[Solution]
– Use lshw(list hardware) as a root

– Install it if needed

– If you want to see it on the web page

[Reference]
http://manpages.ubuntu.com/manpages/precise/man1/lshw.1.html
http://askubuntu.com/questions/55609/how-do-i-check-system-specifications