Shell Scripting

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From Ash, Bash and Csh to Xonsh, Ysh and Zsh; all shell languages are welcome here!

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Keep posts about shell scripting! Here are some guidelines to help:

Allowed: Release Announcement of a command-line program designed for scripted use (e.g. bash, bats, awk, jq, coreutils/moreutils)
Allowed: Tutorials on using shell languages or supplementary tools designed for scripted use
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In general, if your submission text is primarily shell code, then it is welcome here!

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gamma

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jq-shell: Functions for bringing json structures useful to shell (github.com)

submitted 2 years ago* (last edited 2 years ago) by gamma to c/shell

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This came out of playing around with curl and the Lemmy API. I wanted a repeatable way to declare a bunch of shell parameters from a json object, so I wrote a jq module! Take a look at the README for examples, or once you install, run

source <( curl 'https://programming.dev/api/v3/community?id=267' | jq -r 'import "shell" as shell; .community_view | shell::param' )

Currently this project only provides a param function, and only supports Bash and Zsh. If I think of other useful helper functions, I may add them to the project.

This uses _ as a default prefix for each parameter. This is so things like {"PATH": "..."} generate typeset _PATH='...' and don't mangle your $PATH, for example. The prefix can be customized by passing in a string: param("mypfx").

Before declaring a 1.0, I'm planning on expanding shell support, and have the function determine how to output using the the $SHELL parameter:

# This does not work (yet!)
eval (curl $URL | jq -r '
  import "shell" as shell;
  "fish" as $SHELL |
  .community_view | param
')

Always up for feedback!

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