tldr/pages/osx/sysctl.md

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# sysctl
> Access kernel state information.
- Show all available variables and their values:
`sysctl -a`
- Show Apple model identifier:
`sysctl -n hw.model`
- Show CPU model:
`sysctl -n machdep.cpu.brand_string`
- Show available CPU features (MMX, SSE, SSE2, SSE3, AES, etc):
`sysctl -n machdep.cpu.features`
- Set a changeable kernel state variable:
`sysctl -w {{section.tunable}}={{value}}`