this post was submitted on 05 Mar 2025
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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 like fish abbreviations. They are like aliases but expand when you press space or enter. That way you can edit it, and also still see the full command so you are less likely to forget it when you don't have your aliases. Of course I have some scripts as well.
I use ZSH with plugins but back when I switched away from bash, I also looked at fish. I didn't use it back then because people say it doesn't follow the POSIX standard but is that really an issue? It probably only extends it instead of taking things away, right?
I still write most scripts for bash, but for interactive use fish is just so much better out of the box.
Unless you have a particular reason for sticking to POSIX, who cares? I'll take the user experience improvement without worry.
All POSIX compatible shells have their quirks and differences because the common POSIX part is rather small, so you will need to learn them anyway when switching from one to another. Fish is not that different from them (to much less extent than something like nushell) and it benefits from having less ancient baggage.
No issues except that if you want to source files to set env vars you might have to use a plugin (foreignenv in my case)
I still write scripts in bash. But fish's command completion is incredible. Idk, maybe other shells can be that good as well, but fish does out of the box.
Edit: Also some people used to bash wondered what that nice shell is on a server we administrate together. They had no problems using it coming from bash.
And sticking with POSIX is good if you want to stay portable, but my shell mustn't be portable. It should be friendly and reduce mental load.