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: 24 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 2 years ago)
- Default Branch: main
- Last Pushed: 2023-07-14T16:12:16.000Z (almost 2 years ago)
- Last Synced: 2025-02-13T08:52:40.773Z (3 months 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.