Sysctl: Difference between revisions

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=Internal=
=Internal=


* [[Linux#Commands|Linux]]
* [[Linux_Kernel_Info#Kernel_Runtime_Configuration|Linux Kernel Info]]
* [[Mac#Commands|Mac]]
* [[Mac#Commands|Mac]]


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Gets/sets the kernel state.
Gets/sets the kernel state.


=Attributes=
Displays all available and "opaque" values.


==hw.memsize==
sysctl -A


Physical memory size available on the system (in bytes).
For more details about individual configuration attributes, see: {{Internal|Kernel Runtime Configuration|Kernel Runtime Configuration}}
=Options=
==<tt>-w</tt>==
Write configuration:
<syntaxhighlight lang='bash'>
sysctl -w net.bridge.bridge-nf-call-iptables=1
</syntaxhighlight>
This writes <code>/proc/sys/net/bridge/bridge-nf-call-iptables</code>.
 
=Mac Only Attributes=


==kernel.pid_max==
====hw.memsize====


Represents the [[Linux_Process_Management_Concepts#Maximum_Number_of_Processes_Allowed_on_the_System|maximum number of processes allowed on the system]].
Physical memory size available on the system (in bytes).


=<tt>/etc/sysctl.conf</tt>=
=<tt>/etc/sysctl.conf</tt>=
{{Internal|/etc/sysctl.conf|/etc/sysctl.conf}}

Latest revision as of 16:22, 2 July 2021

Internal

Overview

Gets/sets the kernel state.

Displays all available and "opaque" values.

sysctl -A

For more details about individual configuration attributes, see:

Kernel Runtime Configuration

Options

-w

Write configuration:

sysctl -w net.bridge.bridge-nf-call-iptables=1

This writes /proc/sys/net/bridge/bridge-nf-call-iptables.

Mac Only Attributes

hw.memsize

Physical memory size available on the system (in bytes).

/etc/sysctl.conf

/etc/sysctl.conf