In which path is the data, which can be altered by the sysctl command, accessible?

The correct answer is C. /proc/sys/. /proc/sys/ is the virtual filesystem path where kernel parameters managed by sysctl live - for example, /proc/sys/net/ipv4/ip_forward controls IP forwarding, and writing to it (or using sysctl -w) persists changes until reboot. Option A (/dev/sys/) is wrong because /dev/ is for…

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Question

Options

A/dev/sys/
B/sys/
C/proc/sys/
D/sysctl/

How the community answered

(21 responses)

A
5% (1)
C
90% (19)
D
5% (1)

Explanation

/proc/sys/ is the virtual filesystem path where kernel parameters managed by sysctl live - for example, /proc/sys/net/ipv4/ip_forward controls IP forwarding, and writing to it (or using sysctl -w) persists changes until reboot. Option A (/dev/sys/) is wrong because /dev/ is for device files, not kernel tunables. Option B (/sys/) is the sysfs filesystem, which exposes kernel objects and hardware info but is distinct from the sysctl parameter tree under /proc/. Option D (/sysctl/) does not exist as a standard Linux filesystem path.

Memory tip: Think "process controls = /proc/sys/" - the /proc/ pseudo-filesystem is the traditional Linux interface for runtime kernel information and control, and sysctl is just a friendly frontend to the files sitting under /proc/sys/.

Topics

#sysctl#proc filesystem#kernel parameters#system configuration

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