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ojg
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Interactive Examples for Learning Jq
I found Jq to be difficult to use which is why Oj, https://github.com/ohler55/ojg is based on JSONPath. There still are a lot of options but it only takes a couple of help screens to figure out what the options are.
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Building a high performance JSON parser
You might want to take a look at https://github.com/ohler55/ojg. It takes a different approach with a single pass parser. There are some performance benchmarks included on the README.md landing page.
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A Journey building a fast JSON parser and full JSONPath
I like the "Simple Encoding Notation" (SEN) of the underlying library: https://github.com/ohler55/ojg/blob/develop/sen.md
- Oj Is on Tap
- SEN: Simple Encoding Notation
- The fastest tool for querying large JSON files is written in Python (benchmark)
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FX: An interactive alternative to jq to process JSON
Another alternative is the oj app (ojg/cmd/oj) which is part of https://github.com/ohler55/ojg. It relies on JSONPath for extraction and manipulation of JSON.
- Go 1.17 Release Notes
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OjG now has a tokenizer that is almost 10 times faster than json.Decode
I promise to add more examples but in the mean time there are the test files. The one for Unmarshal is https://github.com/ohler55/ojg/blob/develop/oj/unmashall_test.go
- The Pretty JSON Revolution
nushell
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NuShell - Ceci n'est pas une |
These are just three small examples of what this shell written in Rust allows. The features are many and many more, but I'll leave it up to you to discover and enjoy them; I'm currently playing around with it and it's giving me a lot of satisfaction and immediacy, now it has a fixed place among the tools I use when working! The project is Open Source, so if you want to contribute, I invite you, as always, to do so, I leave you the link to the repo here!
- Xonsh: Python-powered, cross-platform, Unix-gazing shell
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Fish shell 3.7.0: last release branch before the full Rust rewrite
Any thoughts on fish as compared to nushell [0]? It's similar to PowerShell in its philosophy and is also written in Rust.
[0] https://github.com/nushell/nushell
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jc: Converts the output of popular command-line tools to JSON
> In PowerShell, structured output is the default and it seems to work very well.
PowerShell goes a step beyond JSON, by supporting actual mutable objects. So instead of just passing through structured data, you effectively pass around opaque objects that allow you to go back to earlier pipeline stages, and invoke methods, if I understand correctly: https://learn.microsoft.com/en-us/powershell/module/microsof....
I'm rather fond of wrappers like jc and libxo, and experimental shells like https://www.nushell.sh/. These still focus on passing data, not objects with executable methods. On some level, I find this comfortable: Structured data still feels pretty Unix-like, if that makes sense? If I want actual objects, then it's probably time to fire up Python or Ruby.
Knowing when to switch from a shell script to a full-fledged programming language is important, even if your shell is basically awesome and has good programming features.
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Ripgrep is faster than {grep, ag, Git grep, ucg, pt, sift}
Maybe if the "popular" shells, but http://www.nushell.sh/ is looking better and better
- "<ESC>[31M"? ANSI Terminal security in 2023 and finding 10 CVEs
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jq 1.7 Released
Yeah agreed, especially now that PowerShell is available cross-platform.
Nushell[1] also seems like a promising alternative, but I haven’t had a chance to play with it yet.
[1]: https://www.nushell.sh/
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The Case for Nushell
I also discovered an existing discussion[1] related to this topic which includes a link[2] to a "helper to call nushell nuon/json/yaml commands from bash/fish/zsh" and a comment[3] that the current nushell dev focus is "on getting the experience inside nushell right and [we] probably won't be able to dedicate design time to get the interface of native Nu commands with an outside POSIX shell right and stable.".
[0] https://gitlab.com/RancidBacon/notes_public/-/blob/main/note...
[1] "Expose some commands to external world #6554": https://github.com/nushell/nushell/issues/6554
[2] https://github.com/cruel-intentions/devshell-files/blob/mast...
[3] https://github.com/nushell/nushell/issues/6554#issuecomment-...
I appreciate what projects like Nushell and Murex are trying to address, but having a saner scripting language and passing structured data in pipelines is not worth the drawbacks for me.
For one, Bash scripting is not so bad if you set some sane defaults and use ShellCheck. Sure, it has its quirks, but all languages do. Even so, the same golden rule applies: use a "real" programming language if your problem exceeds a certain level of complexity. This is relative and will depend on your discomfort threshold, but using the right tool for the job is always a good practice. No matter how good the shell language is, I would hesitate to write and maintain a complex project in it.
And for general QoL improvements with interactive use, Zsh is a fine shell, while still being POSIX compatible.
[1]: https://github.com/nushell/nushell/blob/main/crates/nu-comma...
[2]: https://github.com/nushell/nushell/issues/5027
[3]: https://github.com/nushell/nushell/issues/9310
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Simple PowerShell things allowing you to dig a bit deeper than usual
I found nushell (https://www.nushell.sh) to be an impressive replacement "bash" for Windows
In terms of philosophy, think "Powershell but actually intuitive" : Every data is structured but command names are what you expect them to be. I usually don't even need to look at the documentation.
I liked it so much that I also replaced my shell on Linux with it, so I have the same terminal experience across all OSes
What are some alternatives?
jsonparser - One of the fastest alternative JSON parser for Go that does not require schema
fish-shell - The user-friendly command line shell.
jsonic - All you need with JSON
elvish - Powerful scripting language & Versatile interactive shell
fastjson - Fast JSON parser and validator for Go. No custom structs, no code generation, no reflection
starship - ☄🌌️ The minimal, blazing-fast, and infinitely customizable prompt for any shell!
ask - A Go package that provides a simple way of accessing nested properties in maps and slices.
PowerShell - PowerShell for every system!
jettison - Highly configurable, fast JSON encoder for Go
alacritty - A cross-platform, OpenGL terminal emulator.
json2go - Create go type representation from json
xonsh - :shell: Python-powered, cross-platform, Unix-gazing shell.