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.feature`
- Set a changeable kernel state variable
`sysctl -w name=value`
`sysctl -w kern.maxfiles=15000`