Validate/format JSON by piping to python -m json.tool:
$ echo '{ "test": true }' | python -m json.tool
{
"test": true
}
$ echo '{ "test": true? }' | python -m json.tool
Expecting , delimiter: line 1 column 14 (char 14)
It's part of the Python Standard Library, so it's already on your Mac and most Linux machines.
via @aaronfeng
@nlsmith also tells me that yajl supports something similar with json_reformat:
$ echo '{ "test": true }' | json_reformat
{
"test": true
}
$ echo '{ "test": true? }' | json_reformat
lexical error: invalid char in json text.
{ "test": true? }
(right here) ------^
There's also a json_verify command that does the same thing, minus spitting out pretty formatting. brew install yajl to get it.