Show HN: A command-line utility-belt for hacking JSON and Javascript (github.com)

I found this super useful:

cat data.json | underscore print --color

Gives you a well-formatted, color coded output for your JSON data. That is just one of the many things it can do.

Very nice! I've wanted something like this for as long as I've been a RecordStream (https://github.com/benbernard/RecordStream) fanatic.

Thanks! I put this tool together to tackle a bunch of common tasks I had - groveling through large JSON responses from webservices, using templates to generate documents based on structured config data, etc. I'm really happy that other people are finding it useful too. If you have any feature requests, post them!!!

What's the ?ref=hn in the URL about? I'm intrigued if there's some way to track this sort of thing at GitHub. Or was it just to get around its two previous posts? ;-) (Not that I can blame you for that, gotta keep trying.)

The name of the tool is "underscore" in case you don't feel like clicking the link.

This is not related to underscore.js anyhow? People might find that name confusing.

> Try doing THAT with any other CLI one-liner!

Challenge accepted.

    cat earthporn.json | \
    jshon -e data -e children -a -e data -e title -u | \
    sed -r 's/\<./\U&/g' | tr -d ' ' | sed 's/[^a-zA-Z].*//g`

I'll stick with Jshon for my routers and other little ARM devices.

But this utility is pretty nifty. Personally the whole select thing feels a little too magic for my taste, but when it works it looks quite compact. I'll probably be borrowing that colorizing feature tomorrow. And thanks for the link at the bottom :-)

    sed -r 's/\<./\U&/g; s/ +//g; s/[^a-zA-Z].*//'

To inspect JSON in command-line, I prefer jsontool[1], it's more intuitive.

    something-generating-JSON-on-stdout | json [OPTIONS] [LOOKUPS]

[1] http://trentm.com/json/

    cat hoge.json | json | less

Does anyone have a javascript deobfuscation tool that will autorename variables in different scopes? I love working with javascript through the shell, but js-beautify doesn't always cut it.

The author says: "Or it can form the backbone of a rich, full-powered Javascript command-line, inspired by "perl -pe", and doing for structured data what sed, awk, and grep do for text."

But... "structured data", at least in his examples (and nearly all the JSON I see on the web), is... text. Does his perl script handle binary json?

The author says: "Try doing THAT with any other CLI one-liner!"

Indeed I will, since I do not know perl. Should I learn it?

The folllowing seems to work, but I only tested it on the author's earthporn.json example

1. compile CamelCase filter called yycamel

2. compose throwaway sed oneliner to massage the text

3. pipe through unicode to ascii filter (not included)

4. pipe through yycamel

(I really do not like CamelCase, but whatever.)

   cat > camel.l << eof
   %%
   [ ][A-Za-z]  printf("%c",toupper(yytext[1]));
   eof

   flex -iCfa camel.l
   cc lex.yy.c -static -ll -o yycamel

   sed 's/\"title\": /\
   /g;' earthporn.json |sed 's/[[(]/\ 
   /g;' | sed '/^\"[a-zA-Z]/!d;s/[^a-zA-Z]/ /g;s/  */ /g' |yycamel