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How to know the number of CPUs and spec for each CPU/Core in Ubuntu Karmic?

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I found it: cat /proc/cpuinfo

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dmidecode gives some good system information as well. Useful when debugging hardware issues.

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I personally prefer lshw, which provides extremely detailed info, a wide choice of output forms (including a gui), and is packaged for Karmic (so you can install it with apt-get install lshw).

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