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https://github.com/RGBCube/serenity
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53 lines
1,004 B
Markdown
53 lines
1,004 B
Markdown
## Name
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sysctl - configure kernel parameters at runtime
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## Synopsis
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```**sh
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# sysctl [-a] [-w] [variable[=value]...]
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```
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## Description
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sysctl is a utility for managing kernel configuration parameters at runtime.
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This requires root privileges, and can crash your system.
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Available parameters are listed under /sys/kernel/variables/.
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## Options
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* `-a`: Display all kernel parameters and associated values.
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* `-w`: Set kernel parameters to the specified values.
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## Arguments
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* `variable`: Retrieve the specified parameter.
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* `variable=value`: Set the specified parameter to the specified value. The option `-w` has to be specified.
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## Files
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* `/proc/sys` - source of kernel parameters
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## Examples
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View all parameters:
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```sh
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# sysctl -a
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```
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View `ubsan_is_deadly` parameter:
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```sh
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# sysctl ubsan_is_deadly
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ubsan_is_deadly = 1
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```
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Set `ubsan_is_deadly` parameter to zero (disabled):
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(Note: This requires root privileges)
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```sh
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# su
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# sysctl -w ubsan_is_deadly=0
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ubsan_is_deadly: 1 -> 0
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```
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