From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0
It may be psychosomatic but after picking up a pair of blue block glasses I started getting sleepy at a normal hour which is mostly good.
Studies have shown that the blue light in evening hours are difficult on the eyes and eventually leads to sleep deprivation. You might not even realize but it is very much possible that you are getting less sleep if you work late night on computer or smartphone screen
I like using KDE's built in "Night Color."