Update cheatsheets

linux/zramctl

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# zramctl
+
+> Setup and control zram devices.
+> Use `mkfs` or `mkswap` to format zram devices to partitions.
+> More information: <https://manned.org/zramctl>.
+
+- 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:
+
+`sudo modprobe zram num_devices={{2}}`
+
+- Find and initialize the next free zram device to a 2 GB virtual drive using LZ4 compression:
+
+`sudo zramctl --find --size {{2GB}} --algorithm {{lz4}}`
+
+- List currently initialized devices:
+
+`zramctl`