lk/system/swap.md

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