zramctl:tldr:1b378

zramctl: Enable zram with exactly 2 devices.

modprobe

$ sudo modprobe zram num_devices=${2}

try on your machine

This command is a Linux command used with root privileges (hence 'sudo') to load a kernel module called 'zram' using the 'modprobe' command.

'zram' is a module that provides a compressed block device that can be used for swapping or caching. It is commonly used to create a compressed RAM-based block device, which helps save memory and can improve system performance.

The 'num_devices=${2}' part is a parameter passed to the 'modprobe' command. The value of '${2}' is expected to be provided when executing this command. The value represents the number of zram devices to be created. By specifying 'num_devices=${2}', the command expects a value for 'num_devices' to be passed as the second argument when executing the script or command that contains this line.

For example, if you were to run the command "sudo modprobe zram num_devices=4", it would load the 'zram' module, creating four zram devices.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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