this post was submitted on 26 Apr 2024
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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.
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Are you red-green colorblind?
Yes. Pretty common among men, a trait from their mothers as it lies on the X chromosome. Most women dont have it, as they have a healthy one and it is recessive.
I work with industrial human machine interfaces, used to operate heavy machinery. The prevalence of some form of colorblindness in the male population is around 15-17%, and most heavy machine operators are men.
It’s enough of a safety issue that standards call for at least 2 ways of communicating alarms - most commonly shapes and colors, in many cases text is also used. The use of colors to indicate status (pump running, valve closed, etc) is also limited to colors with a distinct luminance value so that even people with full colorblindness can operate them easily.
In the past, many HMIs were made in which green meant running, red stopped, yellow alarm… let’s just say a lot of people had to be maimed and killed before the standard was issued.