regexp-cut
cobra
regexp-cut | cobra | |
---|---|---|
4 | 129 | |
15 | 36,237 | |
- | - | |
1.8 | 7.8 | |
almost 3 years ago | 8 days ago | |
Shell | Go | |
MIT License | Apache License 2.0 |
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regexp-cut
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Ask HN: What do you use to make CLIs?
I use a lot of CLI tools, but haven't written many for myself. Mostly, aliases/functions and some scripts in Bash/Python.
Extract details for command options from man/help: https://github.com/learnbyexample/command_help/blob/master/c...
cut-like syntax for field manipulations with regexp, negative indexing, etc: https://github.com/learnbyexample/regexp-cut/blob/main/rcut
simple calculator using python syntax: https://learnbyexample.github.io/practice_python_projects/ca...
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Tuc – When cut doesn’t cut it
rcut - my own bash+awk script, supports regexp delimiters, field reordering, negative indexing, etc
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Tuc – when cut doesn’t cut it
Nice, especially the format output.
See also:
* hck (https://github.com/sstadick/hck) - close to drop in replacement for cut that can use a regex delimiter instead of a fixed string
* rcut (https://github.com/learnbyexample/regexp-cut) - my own bash+awk script, supports regexp delimiters, field reordering, negative indexing, etc
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Show HN: Hck – a fast and flexible cut-like tool
I saw about `hck` recently on twitter, was impressed to see support for compressed files. From the current todo list, I hope complement is implemented for sure.
I see Negative index is currently "unlikely". I'm writing a similar tool [0], but with bash+awk. I solved the negative index support with a `-n` option, which changes the range syntax to `:` instead of `-` character.
My biggest trouble came with literal field separator [1], because FS can only be specified as a string in awk and backslash is a metacharacter for both string and regexp.
[0] https://github.com/learnbyexample/regexp-cut
[1] https://learnbyexample.github.io/escaping-madness-awk-litera...
cobra
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The power of the CLI with Golang and Cobra CLI
We can use the flag with --date or -date, Go already does the automatic check. We can make our entire boilerplate with this approach, but let's make it a little easier and use the Cobra CLI package.
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Build your own curl in Golang
In this tutorial, we'll walk through the process of creating a simple command-line tool similar to curl using Go and Cobra, a CLI library for Go.
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Scripts should be written using the project main language
I use https://github.com/spf13/cobra religiously for this kind of thing - it handles all the annoying corner cases of parsing flags, and also has an intuitive notion of subcommands (with basic usage/help text generated) for picking which task you want to run with positional arguments.
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Command Line Interface Guidelines
We recently chose cobra[1] to create a cli application. It comes with so many best practices already packaged like autocompletions, help texts etc. etc.
[1]: https://github.com/spf13/cobra
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What 3rd-party libraries do you use often/all the time?
github.com/spf13/cobra
- O poder do CLI com Golang e Cobra CLI
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How to read Cobra command line flag
I looked at the docs: https://cobra.dev/ ... and there are only examples on how to add new flags.
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Dockerizing Golang CLI Tool - A Step-by-Step Guide
For installing Cobra-CLI you can go to Cobraor run go install github.com/spf13/cobra-cli@latest in the terminal.
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Packaging Go for Arch Linux Tutorial
In my build phase, I compile the source to create a k3sup binary and I also run the binary to generate shell script completions. Give kudos to this functionality which comes from spf13/cobra Go library for CLIs.
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Add License Headers to Your Code Files
NWA is a command-line tool built on cobra. Here's an overview of NWA's commands:
What are some alternatives?
tuc - When cut doesn't cut it
urfave/cli - A simple, fast, and fun package for building command line apps in Go
tac - A high-performance, cross-platform file reverse utility
cli - CLI - A package for building command line app with go
hck - A sharp cut(1) clone.
kingpin - CONTRIBUTIONS ONLY: A Go (golang) command line and flag parser
evolution-mail-filter-clamav - ClamAV email filter for Evolution
kong - Kong is a command-line parser for Go
neofetch - 🖼️ A command-line system information tool written in bash 3.2+
go-flags - go command line option parser
keygen-cli - Official command line tool for publishing releases to Keygen's distribution API.
mitchellh/cli - A Go library for implementing command-line interfaces.