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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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Why do OpenRC, runit, Sysvinit not Use Config File as Their Init Script Like Upstart/systemd? (lemmy.ml)

submitted 7 months ago by [email protected] to c/[email protected]

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Why do they use Shell?

Sorry for bad English. English isn't my native languange

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[–] [email protected] 14 points 7 months ago (1 children)

I'm far from an expert in init systems, but there are some benefits to declarative approaches for configuration. It's one of the main reasons yaml and toml are as popular as they are. The short version is, declarative configuration tends to be less verbose, and the declarative contract defines what state you want things to be in, not how to get there which makes it easier on the person writing the unit file, and on the implementers of systemd in that there's a smaller surface-area to test

Generally declarative:

requires less verbose configuration files, less room for error
is easier to document and easier to understand
leaves the implementers more freedom to improve their system as long as they live up to the agreed-upon contract
is easier for implementers to test/validate. They don't need to support a scripting language and every single crazy thing someone might try with one but still consider valid

[–] [email protected] 4 points 7 months ago

The declarative approach also allows for better composability - user tweaks can just be the relevant lines on top of the packaged default config.