To manipulate JSON data with perl-oneliner I have been writing like this: % perl -MJSON -0 -E 'say decode_json(<>)->{foo}' data.json ... which tires my fingers. Recently I found ARGV::URL, which may be useful for one-liners, so I wrote the JSON-version of this module, ARGV::JSON. With this module you can simply use <> to access the data structure that the JSON represents. % perl -MARGV::JSON -E 's