tldr/pages/osx/sysctl.md

# sysctl

> Access kernel state information.
> More information: <https://keith.github.io/xcode-man-pages/sysctl.8.html>.

- 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}}`
A bunch of new pages: common/: dig, gzip, rm, sort, zfs, zpool linux/: apt-get, shutdown osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler Edits to existing pages: curl: Added simple download example find: Added iname and size exmaples grep: Edited -c description ps: Added wide lines example ssh: edited -D description, added simple port forwarding example unzip: added list option 2014-02-10 20:36:05 +00:00			`# sysctl`

Formatted all pages according to guidelines. 2016-01-07 17:31:27 +00:00			`> Access kernel state information.`
pages.*: use keith.github.io for builtin man pages (#12168) 2024-01-31 10:20:27 +00:00			`> More information: <https://keith.github.io/xcode-man-pages/sysctl.8.html>.`
A bunch of new pages: common/: dig, gzip, rm, sort, zfs, zpool linux/: apt-get, shutdown osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler Edits to existing pages: curl: Added simple download example find: Added iname and size exmaples grep: Edited -c description ps: Added wide lines example ssh: edited -D description, added simple port forwarding example unzip: added list option 2014-02-10 20:36:05 +00:00
Formatted all pages according to guidelines. 2016-01-07 17:31:27 +00:00			`- Show all available variables and their values:`
A bunch of new pages: common/: dig, gzip, rm, sort, zfs, zpool linux/: apt-get, shutdown osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler Edits to existing pages: curl: Added simple download example find: Added iname and size exmaples grep: Edited -c description ps: Added wide lines example ssh: edited -D description, added simple port forwarding example unzip: added list option 2014-02-10 20:36:05 +00:00
			`sysctl -a`

Formatted all pages according to guidelines. 2016-01-07 17:31:27 +00:00			`- Show Apple model identifier:`
A bunch of new pages: common/: dig, gzip, rm, sort, zfs, zpool linux/: apt-get, shutdown osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler Edits to existing pages: curl: Added simple download example find: Added iname and size exmaples grep: Edited -c description ps: Added wide lines example ssh: edited -D description, added simple port forwarding example unzip: added list option 2014-02-10 20:36:05 +00:00
			`sysctl -n hw.model`

Formatted all pages according to guidelines. 2016-01-07 17:31:27 +00:00			`- Show CPU model:`
A bunch of new pages: common/: dig, gzip, rm, sort, zfs, zpool linux/: apt-get, shutdown osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler Edits to existing pages: curl: Added simple download example find: Added iname and size exmaples grep: Edited -c description ps: Added wide lines example ssh: edited -D description, added simple port forwarding example unzip: added list option 2014-02-10 20:36:05 +00:00
			`sysctl -n machdep.cpu.brand_string`

Formatted all pages according to guidelines. 2016-01-07 17:31:27 +00:00			`- Show available CPU features (MMX, SSE, SSE2, SSE3, AES, etc):`
A bunch of new pages: common/: dig, gzip, rm, sort, zfs, zpool linux/: apt-get, shutdown osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler Edits to existing pages: curl: Added simple download example find: Added iname and size exmaples grep: Edited -c description ps: Added wide lines example ssh: edited -D description, added simple port forwarding example unzip: added list option 2014-02-10 20:36:05 +00:00
sysctl: fix typo (#4184) * Fix wrong option * Update sysctl.md 2020-07-16 19:44:50 +01:00			`sysctl -n machdep.cpu.features`
A bunch of new pages: common/: dig, gzip, rm, sort, zfs, zpool linux/: apt-get, shutdown osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler Edits to existing pages: curl: Added simple download example find: Added iname and size exmaples grep: Edited -c description ps: Added wide lines example ssh: edited -D description, added simple port forwarding example unzip: added list option 2014-02-10 20:36:05 +00:00
Formatted all pages according to guidelines. 2016-01-07 17:31:27 +00:00			`- Set a changeable kernel state variable:`
A bunch of new pages: common/: dig, gzip, rm, sort, zfs, zpool linux/: apt-get, shutdown osx/: airport, caffeinate, diskutil, networksetup open, pgrep, qlmanage, say, shutdown, sysctl, system_profiler Edits to existing pages: curl: Added simple download example find: Added iname and size exmaples grep: Edited -c description ps: Added wide lines example ssh: edited -D description, added simple port forwarding example unzip: added list option 2014-02-10 20:36:05 +00:00
Sysctl: Condense by removing explicit maxfiles example. 2016-01-20 11:46:22 +00:00			`sysctl -w {{section.tunable}}={{value}}`