https://github.com/thexhr/ctempd

Small daemon to set screen temperature automatically
https://github.com/thexhr/ctempd

c color-temperature daemon openbsd redshift screen temperature x11

Last synced: 7 days ago
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Small daemon to set screen temperature automatically

• Host: GitHub
• URL: https://github.com/thexhr/ctempd
• Owner: thexhr
• Created: 2023-01-14T18:45:41.000Z (over 1 year ago)
• Default Branch: main
• Last Pushed: 2023-07-14T16:12:16.000Z (about 1 year ago)
• Last Synced: 2024-09-22T20:02:32.075Z (11 days ago)
• Topics: c, color-temperature, daemon, openbsd, redshift, screen, temperature, x11
• Language: C
• Homepage:
• Size: 42 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# Screen Color Temperature Changing Daemon

Small daemon to set screen temperature.  ctempd can either set the screen's temperature once with the -s option or run in the background and set the

screen's temperature automatically based on the time of day.

## Features

* Set screen temperature continuously in the background

* Set screen temperature once

## Installation

ctempd is written in C and known to work on the operating systems listed in the table below.  To compile it you need the following things:

* A recent C compiler (tested with both clang >= 11 and GCC >= 8)

* make (tested with both BSD and GNU make)

* [libXrandr](https://www.x.org/wiki/libraries/libxrandr/)

* [libX11 core development libraries](https://www.x.org/releases/current/doc/libX11/libX11/libX11.html)

### Dependencies

Install the dependencies as follows:

| Operating System | Commands and Notes |

| --- | --- |

| FreeBSD | `pkg install xorg` |

| OpenBSD | All installed by default |

| Ubuntu | `apt install build-essential libxrandr-dev` |

| Void Linux| `xbps-install gcc make libXrandr-devel libX11-devel` |

### Compilation and Installation

By default, the `Makefile` looks for external includes and libraries in `/usr/local/{include,lib}`, `/usr/X11R6/{include,lib}`.  If your distribution uses special path, you have to modify the Makefile accordingly.

Compile and install with the following commands:

```

$ make

# make install

```

## Usage

Let ctempd automatically adapt the screen temperature based on the time of day.  The highest temperature at noon is 5400K:

```

$ ctempd 5400

```

ctempd logs via syslog, you can check the current temperature in your system's log messages.

Set the screen temperature to 3200K once.

```

$ ctempd -s 3200

```

## License

isscrolls was written by Matthias Schmidt and is public domain.  The algorithm to set the screen temperature was written by Ted Unangst and is also public domain.