| Rev | Author | # | Line |
|---|---|---|---|
| 1 | perry | 1 | !!NAME |
| 3 | PerryLorier | 2 | sysctl - configure kernel parameters at runtime |
| 1 | perry | 3 | |
| 4 | !!SYNOPSIS | ||
| 3 | PerryLorier | 5 | __sysctl [[-n] __''variable''__ ...__ |
| 6 | __sysctl [[-n] -w __''variable''__=__''value''__ ...__ | ||
| 7 | __sysctl [[-n] -p__ | ||
| 8 | __sysctl [[-n] -a__ | ||
| 9 | __sysctl [[-n] -A__ | ||
| 1 | perry | 10 | !!DESCRIPTION |
| 3 | PerryLorier | 11 | sysctl(8) is used to modify kernel parameters at runtime. The parameters available are those listed under /proc/sys/. Procfs is required for sysctl(8) support |
| 12 | in Linux. You can use sysctl(8) to both read and write sysctl data. | ||
| 1 | perry | 13 | |
| 14 | !!PARAMETERS | ||
| 3 | PerryLorier | 15 | ;__variable__: The name of a key to read from. An example is kernel.ostype. The '/' separator is also accepted in place of a '.'. |
| 1 | perry | 16 | |
| 17 | |||
| 3 | PerryLorier | 18 | ;__variable=value__: To set a key, use the form variable=value, where variable is the key and value is the value to set it to. If the value contains quotes or characters which are parsed by the shell, you may need to enclose the value in double quotes. This requires the -w parameter to use. |
| 1 | perry | 19 | |
| 3 | PerryLorier | 20 | ;__-n__: Use this option to disable printing of the key name when printing values. |
| 1 | perry | 21 | |
| 3 | PerryLorier | 22 | ;__-w__: Use this option when you want to change a sysctl setting. |
| 1 | perry | 23 | |
| 3 | PerryLorier | 24 | ;__-p__: Load in sysctl settings from the file specified or /etc/sysctl.conf if none given. |
| 1 | perry | 25 | |
| 3 | PerryLorier | 26 | ;__-a__: Display all values currently available. |
| 1 | perry | 27 | |
| 3 | PerryLorier | 28 | ;__-A__: Display all values currently available in table form. |
| 1 | perry | 29 | |
| 30 | !!EXAMPLES | ||
| 3 | PerryLorier | 31 | /sbin/sysctl -a |
| 32 | /sbin/sysctl -n kernel.hostname | ||
| 33 | /sbin/sysctl -w kernel.domainname='example.com' | ||
| 34 | /sbin/sysctl -p /etc/sysctl.conf | ||
| 1 | perry | 35 | !!FILES |
| 3 | PerryLorier | 36 | ''/proc/sys /etc/sysctl.conf'' |
| 1 | perry | 37 | |
| 38 | !!SEE ALSO | ||
| 3 | PerryLorier | 39 | sysctl.conf(5) |
| 1 | perry | 40 | |
| 41 | !!BUGS | ||
| 3 | PerryLorier | 42 | The -A parameter behaves just as -a does. |
| 1 | perry | 43 | |
| 44 | !!AUTHOR | ||
| 3 | PerryLorier | 45 | George Staikos, <staikos@0wned.org> |
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