lk/basics/swap.md
2022-01-16 19:29:49 +01:00

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---
title: "swap"
tags: [ "Documentation", "basics" ]
---
# Making a Swap File
> sudo mkdir -v /var/cache/swap
> cd /var/cache/swap
> sudo dd if=/dev/zero of=swapfile bs=1K count=4M
This creates a swapfile of (1k x 4M) 4 Gigs.
Change 4M to XM for an XGig swap.
> sudo chmod 600 swapfile
> sudo mkswap swapfile
> sudo swapon swapfile
Test it's working with top
> top -bn1 | grep -i swap
or:
> echo "/var/cache/swap/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab
Test it'll work at boot with:
> sudo swapoff swapfile
> sudo swapon -va
# Partition Swaps
Put this in /etc/fstab:
`UUID=blah-blah none swap sw 0 0`
Then test it works with:
> sudo swapon -va
Test other partitions in fstab with:
> sudo mount -a