I have a json file as belows:
{
"HealthCheckPath": "/",
"HealthCheckIntervalSeconds": 30
}
I wanna create a key with Test name. My desired result:
"Test": {
"HealthCheckPath": "/",
"HealthCheckIntervalSeconds": 30
}
I want to using jq option with bash or other way via bash shell.
Run below to get desired output:
jq '{ "Test" : .}' file.json
Related
I need to grab variables from JSON properties.
The JSON array looks like this (GitHub API for repository tags), which I obtain from a curl request.
[
{
"name": "my-tag-name",
"zipball_url": "https://api.github.com/repos/path-to-my-tag-name",
"tarball_url": "https://api.github.com/repos/path-to-my-tag-name-tarball",
"commit": {
"sha": "commit-sha",
"url": "https://api.github.com/repos/path-to-my-commit-sha"
},
"node_id": "node-id"
},
{
"name": "another-tag-name",
"zipball_url": "https://api.github.com/repos/path-to-my-tag-name",
"tarball_url": "https://api.github.com/repos/path-to-my-tag-name-tarball",
"commit": {
"sha": "commit-sha",
"url": "https://api.github.com/repos/path-to-my-commit-sha"
},
"node_id": "node-id"
},
]
In my actual JSON there are 100s of objects like these.
While I loop each one of these I need to grab the name and the commit URL, then perform more operations with these two variables before I get to the next object and repeat.
I tried (with and without -r)
tags=$(curl -s -u "${GITHUB_USERNAME}:${GITHUB_TOKEN}" -H "Accept: application/vnd.github.v3+json" "https://api.github.com/repos/path-to-my-repository/tags?per_page=100&page=${page}")
for row in $(jq -r '.[]' <<< "$tags"); do
tag=$(jq -r '.name' <<< "$row")
# I have also tried with the syntax:
url=$(echo "${row}" | jq -r '.commit.url')
# do stuff with $tag and $url...
done
But I get errors like:
parse error: Unfinished JSON term at EOF at line 2, column 0 jq: error
(at :1): Cannot index string with string "name" } parse error:
Unmatched '}' at line 1, column 1
And from the terminal output it appears that it is trying to parse $row in a strange way, trying to grab .name from every substring? Not sure.
I am assuming the output from $(jq '.[]' <<< "$tags") could be valid JSON, from which I could again use jq to grab the object properties I need, but maybe that is not the case? If I output ${row} it does look like valid JSON to me, and I tried pasting the results in a JSON validator, everything seems to check out...
How do I grab the ".name" and ".commit.url" for each of these object before I move onto the next one?
Thanks
It would be better to avoid calling jq more than once. Consider, for example:
while read -r name ; do
read -r url
echo "$name" "$url"
done < <( curl .... | jq -r '.[] | .name, .commit.url' )
where curl .... signifies the relevant invocation of curl.
I have the following JSON:
{
"contexts": {
"context1": {
"mydata": "value1"
},
"context2": {
"mydata": "value2"
}
},
"current_context": "context2"
}
I'd like to use jq to output the value of mydata for the context indicated by current_context. The above would output value2. If I change the JSON to have "current_context": "context1", I'd get value1.
Given two invocations of jq, and the above JSON content in a file called jq.json, this works:
jq -r --arg context "$(jq -r '.current_context' jq.json)" '.contexts | to_entries[] | select(.key == $context) | .value.mydata' jq.json
Is there a way to do this with a single invocation of jq?
Thanks!
Like this:
jq -r '.contexts[.current_context].mydata' file.json
You could also use a variable:
jq -r '.current_context as $cc|.contexts[$cc].mydata' file.json
and here's an alternative to jq solution, based on a walk-path unix utility jtc:
bash $ jtc -w'[current_context]<cc>v[^0]<cc>t[mydata]' file.json
"value2"
bash $
walk path (-w) breakdown:
[current_context]<cc>v - get to the current_context value and memorize it in the namespace cc (directive <cc>v does it)
[^0]<cc>t[mydata] - reset walk path back to root ([^0]) and recursively search for the label (tag) stored in the namespace (<cc>t), then address found JSON object by label mydata.
PS> Disclosure: I'm the creator of the jtc - shell cli tool for JSON operations
I am trying to get multiple values from a json object.
{
"nextToken": "9i2x1mbCpfo5hQ",
"jobSummaryList": [
{
"jobName": "012210",
"jobId": "0196f81cae73"
}
]
}
I want nextToken's value and jobName in one jq command.
https://stedolan.github.io/jq/manual/
jq '.nextToken, .jobSummaryList[].jobName' file
[
{
"name":"sandboxserver.tar.gz.part-aa",
"hash":"010d126f8ccf199f3cd5f468a90d5ae1",
"bytes":4294967296,
"last_modified":"2018-10-10T01:32:00.069000",
"content_type":"binary/octet-stream"
},
{
"name":"sandboxserver.tar.gz.part-ab",
"hash":"49a6f22068228f51488559c096aa06ce",
"bytes":397973601,
"last_modified":"2018-10-10T01:32:22.395000",
"content_type":"binary/octet-stream"
},
{
"name":"sandboxserver.tar.gz.part-ac",
"hash":"2c5e845f46357e203214592332774f4c",
"bytes":5179281858,
"last_modified":"2018-10-11T08:20:11.566000",
"content_type":"binary/octet-stream"
}
]
I am getting above JSON as response while listing the objects in cloud object storage using curl -l -X GET. How can I get the object "name" assigned to an array while looping through all the objects.
for example
array[1]="sandboxserver.tar.gz.part- aa"
array[2]="sandboxserver.tar.gz.part- ab"
array[3]="sandboxserver.tar.gz.part- ac"
You can use jq.
jq is a powerful tool that lets you read, filter, and write JSON in bash.
You might need to install it first.
Try this:
I've pasted your json into a file:
~$ cat n1.json
[
{
"name":"sandboxserver.tar.gz.part-aa",
"hash":"010d126f8ccf199f3cd5f468a90d5ae1",
"bytes":4294967296,
"last_modified":"2018-10-10T01:32:00.069000",
"content_type":"binary/octet-stream"
},
{
"name":"sandboxserver.tar.gz.part-ab",
"hash":"49a6f22068228f51488559c096aa06ce",
"bytes":397973601,
"last_modified":"2018-10-10T01:32:22.395000",
"content_type":"binary/octet-stream"
},
{
"name":"sandboxserver.tar.gz.part-ac",
"hash":"2c5e845f46357e203214592332774f4c",
"bytes":5179281858,
"last_modified":"2018-10-11T08:20:11.566000",
"content_type":"binary/octet-stream"
}
]
And then used jq to find the names:
~$ jq -r '.[].name' n1.json
sandboxserver.tar.gz.part-aa
sandboxserver.tar.gz.part-ab
sandboxserver.tar.gz.part-ac
If you don't want to depend on external utility like jq, use can use python + bash combo do the trick.
response="$(cat data.json)"
declare -a array
array=($(python -c "import json,sys; data=[arr['name'] for arr in json.loads(sys.argv[1])]; print('\n'.join(data));" "$response"))
echo "${array[#]}"
Advice: Writing embedded python code may soon become unreadable so you may want to put the python code in a separate script and run the script.
I need to pull a substring from JSON. In the JSON doc below, I need the end of the value of jq '.[].networkProfile.networkInterfaces[].id' In other words, I need just A10NICvw4konls2vfbw-data to pass to another command. I can't seem to figure out how to pull a substring using grep. I've seem regex examples out there but haven't been successful with them.
[
{
"id": "/subscriptions/blah/resourceGroups/IPv6v2/providers/Microsoft.Compute/virtualMachines/A10VNAvw4konls2vfbw",
"instanceView": null,
"licenseType": null,
"location": "centralus",
"name": "A10VNAvw4konls2vfbw",
"networkProfile": {
"networkInterfaces": [
{
"id": "/subscriptions/blah/resourceGroups/IPv6v2/providers/Microsoft.Network/networkInterfaces/A10NICvw4konls2vfbw-data",
"resourceGroup": "IPv6v2"
}
]
}
}
]
In your case, sub(".*/";"") will do the trick as * is greedy:
.[].networkProfile.networkInterfaces[].id | sub(".*/";"")
Try this:
jq -r '.[]|.networkProfile.networkInterfaces[].id | split("/") | last'
The -r tells JQ to print the output in "raw" form - in this case, that means no double-quotes around the string value.
As for the jq expression, after you access the id you want, piping it (still inside jq) through split("/") turns it into an array of the parts between slashes. Piping that through the last function (thanks, #Thor) returns just the last element of the array.
If you want to do it with grep here is one way:
jq -r '.[].networkProfile.networkInterfaces[].id' | grep -o '[^/]*$'
Output:
A10NICvw4konls2vfbw-data