this post was submitted on 17 Aug 2023
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Linux
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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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This was a solved problem before systemd was a thing. And, even if we assumed that Upstart (2006), OpenRC (2007) and others wouldn't have existed in 2010: How often do you need to reboot your system before the intrusiveness of systemd is worth it?
In Upstart's readiness protocol, daemons are expected to
SIGSTOP
themselves to signal readiness to the process supervisor. This design is extremely questionable, to put it politely.OpenRC still relies on System V shell scripts, and therefore is not an improvement.
“[T]he intrusiveness of systemd” means nothing to me. I care about what it can do and how well, not whether it's liked by change-fearing graybeards.
The number of reboots required before the effort to learn systemd becomes worth it is approximately 1. Shell-script-based shutdowns frequently hang, and when they don't, they take 30+ seconds to shut the system down. Systemd can shut the system down in 5 to 10 seconds. Hallelujah and good riddance to what was one of my least favorite parts of the Linux experience.