linux system

How do I find out the number of CPU cores available under HP x86_64 Linux serer running on RHEL / Debian Linux 6.x?

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cat command

I am a new Linux and Unix system user. How do I use cat command on Linux or Unix-like operating systems? Can you provide basic examples and syntax usage for cat command?

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What is /bin/dash? I noticed that the default system shell /bin/sh was changed to /bin/dash. Why was this change made?

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How do I stop a process under Ubuntu Linux using command line and GUI tools?

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I want to add more RAM to my server running Ubuntu Linux. How do I find out my current RAM chip information such as its speed, type and manufacturer name within a Linux system without opening the case?

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