this post was submitted on 16 Dec 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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I also have a sysadmin/devops/sre type career, and my impression is rather the opposite: With systemd Linux became a lot cleaner and predictable, compared to the mess of shell scripts we had before. There's never been anything clean or well-architected about shell scripts, they've always been a messy collection of not-quite-the-same languages that have all safeguards turned off by default, and it's up to the programmer to turn them on and hope they actually work. Good for one-shots and exploration in the terminal, though.
I also don't miss logrotate or finding out that some app places its logs somewhere mystical. Being able to read app logs just by knowing the service name is wonderful, as are the timestamp and boot arguments.
systemd didn't appear as just one guy's brain child, nor could it rise to the dominance it has if the way it works was as controversial or bad as it is in your opinion.
I haven't been on-call for the past few years, but my impression is that there have been fewer and fewer on-call events over my career. That's also largely on app developers and a shift to Kubernetes, but it's a generally pleasant change. There's nothing I hate more than being woken up.