---
name: "blight"
section: "1"
platform: "linux"
package: "blight"
version: "0.7.1-2+b3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/blight"
---

# blight(1)

Hassle-free CLI backlight utility for Linux

## NAME

blight - Hassle-free CLI backlight utility for Linux

## SYNOPSIS

**blight** \[*options*\] *command* \[*value*\]

## DESCRIPTION

This manual page documents the **blight** program.

**blight** is a hassle-free CLI utility to manage backlight on Linux; one that plays well with hybrid GPU configuration and proprietary drivers.

## FLAGS

- **-s, --sweep**

  Lets you increase brightness gradually, resulting in a smooth change. Can only be used with the inc and dec commands.

- **-d, --device \<name\>**

  Lets you specify a backlight device target other than the default one. Can only be used with the inc, dec, set, save and status commands.

## COMMANDS

- **inc** \<value\> \[-s \| --sweep\] \[-d \| --device \<name\>\]

  Increase brightness by the given value.

- **dec** \<value\> \[-s \| --sweep\] \[-d \| --device \<name\>\]

  Decrease brightness by the given value.

- **set** \<value\> \[-d \| --device \<name\>\]

  Set brightness to the given value.

- **save** \[-d \| --device \<name\>\]

  Save current brightness value to restore later.

- **restore**

  Restore saved brightness value.

- **setup**

  Install udev rules and add user to video group (run with sudo).

- **status** \[-d \| --device \<name\>\]

  Show backlight device status.

- **list**

  List all backlight devices.

- **help**

  Display help.

## SEE ALSO

The program is documented fully at */usr/share/doc/blight/README.md*.