tldr/pages/linux/zramctl.md

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# zramctl
> Setup and control zram devices.
> Use `mkfs` or `mkswap` to format zram devices to partitions.
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- Check if zram is enabled:
`lsmod | grep -i zram`
- Enable zram with a dynamic number of devices (use `zramctl` to configure devices further):
`sudo modprobe zram`
- Enable zram with exactly 2 devices:
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`sudo modprobe zram num_devices={{2}}`
- Find and initialise the next free zram device to a 2GB virtual drive using LZ4 compression:
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`sudo zramctl --find --size {{2GB}} --algorithm {{lz4}}`
- List currently initialised devices:
`zramctl`