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Linux in a Nutshell, 6th Edition by Robert Love, Stephen Figgins, Ellen Siever, Arnold Robbins

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Name

sysctl

Synopsis

sysctl [options] [key]

System administration command. Examine or modify kernel parameters at runtime using the /proc/sys filesystem. While many of these kernel keys can be altered by other utilities, sysctl provides a single interface to kernel settings.

Options

-a, -A

Display all available values.

-e

Ignore requests for unknown keys.

-n

Print values only, no keynames.

-N

Print keynames only.

-p [file]

Reset keys from information specified in /etc/sysctl.conf, or the specified file.

-q

When setting values, don’t print the values to stdout.

-w key=value

Write a new value to the specified key.

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