The semantics of ‘contains’ is not straightforward at all. In general, it would be better to use ‘index’ to test if an array has a specific value, e.g. .fruit | index( “orange” ) However, if the item of interest is itself an array, the general form: ARRAY | index( [ITEM] ) should be used, e.g.: … Read more
Very close! In your select expression, you have to use a pipe (|) before contains. This filter produces the expected output. . – map(select(.Names[] | contains (“data”))) | .[] .Id The jq Cookbook has an example of the syntax. Filter objects based on the contents of a key E.g., I only want objects whose genre … Read more
[EDIT: This answer has been revised in accordance with the revision to the question.] The key to using jq to solve the problem is the -c command-line option, which produces output in JSON-Lines format (i.e., in the present case, one object per line). You can then use a tool such as awk or split to … Read more
You could try: jq -r ‘to_entries|map(“\(.key)=\(.value|tostring)”)|.[]’ test.json Here’s a demo: $ cat test.json { “var”: 1, “foo”: “bar”, “x”: “test” } $ jq -r ‘to_entries|map(“\(.key)=\(.value|tostring)”)|.[]’ test.json foo=bar var=1 x=test
jq has the fromjson builtin for this: jq ‘.c | fromjson | .id’ myFile.json fromjson was added in version 1.4.
Use a temporary file; it’s what any program that claims to do in-place editing is doing. tmp=$(mktemp) jq ‘.address = “abcde”‘ test.json > “$tmp” && mv “$tmp” test.json If the address isn’t hard-coded, pass the correct address via a jq argument: address=abcde jq –arg a “$address” ‘.address = $a’ test.json > “$tmp” && mv “$tmp” … Read more
The jq program .dev.projects.”$v” in your example will literally try to find a key named “$v”. Try the following instead: jq –arg v “$PRJNAME” ‘.dev.projects[$v]’ config.json
If you want key and value, and based on How do i convert a json object to key=value format in JQ, you can do: $ jq -r “to_entries|map(\”\(.key)=\(.value|tostring)\”)|.[]” file SALUTATION=Hello world SOMETHING=bla bla bla Mr. Freeman In a more general way, you can store the values into an array myarray[key] = value like this, just … Read more
Just use a filter that would return each item in the array. Then loop over the results, just make sure you use the compact output option (-c) so each result is put on a single line and is treated as one item in the loop. jq -c ‘.[]’ input.json | while read i; do # … Read more
This post addresses the question about the absence of the equivalent of sed’s “-i” option, and in particular the situation described: I have a bunch of files and writing each one to a separate file wouldn’t be easy. There are several options, at least if you are working in a Mac or Linux or similar … Read more