go run <script_name>.go
jq在线验证：https://jqplay.org/jq
jq-to_entries-map-from_entries
[jiankunking@hddxps8156 jiankunking]# cat jq-entries.sh
#!/bin/bash
='{"a": "xxxx","b": "yyyy"}'
a=20
echo `echo $data| jq 'to_entries'`data=`echo $data| jq 'to_entries | map(if .key == "a" then . + {"value":'$a'} else . end) | from_entries'`echo $data
if [ `echo $data | jq '.a'` -eq 20 ];then echo 666
fidata=`echo $data | sed 's/ //g'`
echo $data
[jiankunking@hddxps8156 jiankunking]# ./jq-entries.sh
[ { "key": "a", "value": "xxxx" }, { "key": "b", "value": "yyyy" } ]
{ "a": 20, "b": "yyyy" }
666
{"a":20,"b":"yyyy"}
jq-to_entries-select
[jiankunking@hddxps8156 jiankunking]# kubectl get deployment test-admin -n i-test -ojson
{"apiVersion": "apps/v1","kind": "Deployment","metadata": {"labels": {"app": "test-admin","app.kubernetes.io/name": "test-admin","app.kubernetes.io/version": "v0"},"name": "test-admin","namespace": "i-test","resourceVersion": "2257518831","uid": "4519e6a3-a881-4b16-9cff-83d2d7425bf6"},"spec": {},"status": {}
}
[jiankunking@hddxps8156 jiankunking]# kubectl get deployment test-admin -n i-test -ojson | jq '.metadata.labels'
{"app": "test-admin","app.kubernetes.io/name": "test-admin","app.kubernetes.io/version": "v0"
}
[jiankunking@hddxps8156 jiankunking]# kubectl get deployment test-admin -n i-test -ojson | jq '.metadata.labels'| jq -r 'to_entries[]| select(.key=="app.kubernetes.io/name")| .value'
test-admin
[jiankunking@hddxps8156 jiankunking]#