---
title: "Void Linux Basics"
tags: [ "Documentation", "Void" ]
---
# Updates

Update all packages with

> sudo xbps-install -Su

See [xbps](xbps.md) for more.

# Remove old packages

Void keeps *every* version of everything you install, so you can roll back to them.
Remove old packages with:

> sudo xbps-remove -O

# vkpurge

Old Void kernels are left on the boot partition.  List them with:

> vkpurge list

Remove one with:

> vkpurge 2.8.2_4

Remove all but the latest with:

> vkpurge rm all

# Brightness

Look in `/sys/class/backlight/*/brightness`.
You can change this number to change the screen brightness.

For an easy utility, install `brightnessctl`.

> brightnessctl s 10%-

> brightnessctl s 10%+

# Other Tricks

- [autologin](autologin.md)
- [services](sv.md)
- [wifi](wpa_cli.md)