system information

I need to find out the service tag of my Dell server or computer. How do I find out my nique five- to seven- digit alphanumeric (letter and number) service tag code without looking on the back of the system or opening door of bezel?

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How do I find out what kernel version I am currently running under Debian Linux or any other Linux distribution using a shell prompt? How do I find out Unix kernel version?

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I am a new proud Linux user. My question to you is – how do I find which kernel version installed on my Linux system? How do I upgrade my kernel to latest version? Any help would be greatly appreciated.

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How do I determine if my CPU is 64bit or not under Linux operating systems?

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