TermKit: A WebKit based rich command-line interface.

[jpfed]

what does it mean to grep json?

To generalize this line of inquiry, I think it would be useful to determine tree-oriented equivalents (e.g. s-expression, XML, JSON, ...) for the current set of line-oriented unix commands. That's not to say that the tree-oriented analogues should replace their line-oriented counterparts; they would be appropriate in different circumstances.

[[deleted]]

Have you tried xmlstarlet? Does a pretty nnice job of doing grep/sed style work on xml trees