Linux

Mr. Torvalds started quite the thing with Linux, and today it's powering all sorts of systems, from small embedded devices through Android phones all the way to general cloud servers and specialized high-performance systems.

Resources

• Kernel website and its documentation pages.
• /proc filesystem holds a ton of useful information.
• /proc/sys/vm has got you covered for virtual memory.
• /sys/power provides access to the power management subsystem.

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