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[ysh] (1/3) Reviewing YSH(www.oilshell.org)

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Gamma@programming.devM
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YSH, or the shell formally known as oil, is touted as a possible upgrade path from Bash.

This is the first in a three-part series of posts re-introducing the language.

  1. Reviewing YSH (you are here)
  2. Sketches of YSH Features
  3. YSH, Narrow Waists, and Perlis-Thompson Problems (Not yet released)
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Gamma@programming.devOPM
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I need to disclaim that I am not affiliated with the project, and have actually been pretty critical of it in the past. But I tend to agree with the author’s reasoning across most of the blog, so I believe there is real merit to the shell.

Who knows, maybe in a few years we’ll all be writing YSH!

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Howard Do@programming.dev
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At what is this better than zsh, bash or fish? What make u switch to ysh?

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Gamma@programming.devOPM
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I haven’t switched to ysh. I personally use Zsh for my interactive shell, but I write my scripts in a variety of shells.

You can start with Ysh in its Bash-compatible mode, individually enable new features with shopt. Those features include:

  • Not splitting or globbing $foo by default (this is shared by Zsh and Fish)
  • A Python-inpsired parsing mode, which should supersede arithmetic mode (induced by ( ) in tests, $[ ] for string splicing and @[ ] for array splicing)
  • Strucutred data
  • New functions which return structured data (Oil calls classic shell functions “procs”, because they behave a lot like external programs with extra side effects)
  • cd to/somewhere { echo $PWD;}
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sweet@beehaw.org
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I’m interested in it. It claims to be quite a bit faster but I’m curious as to how practical it is.

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