I have a variable with nested json,a={content:[{JOB_STATUS_ID:283739,PROGRAM_ID:57,STATUS:Completed,**DATA_DATE**:2017-03-09 00:00:00,**START_TIME**:2017-03-10 00:46:13,END_TIME:2017-03-10 00:56:40,TOTAL_ROWS:null,UPDATED_ROWS:null,DELETED_ROWS:null,INSERTED_ROWS:null,REF1:NULL,REF2:NULL,AUD_CREATE_DT:2017-03-10 00:46:13,AUD_CREATE_USER:JOB_CONTROL,AUD_MODIFY_DT:2017-03-10 00:56:40,AUD_MODIFY_USER:JOB_CONTROL},{JOB_STATUS_ID:109711,PROGRAM_ID:57,STATUS:Completed,DATA_DATE:2017-01-11 00:00:00,START_TIME:2017-01-12 16:55:14,END_TIME:2017-01-12 18:54:51,TOTAL_ROWS:null,UPDATED_ROWS:null,DELETED_ROWS:null,INSERTED_ROWS:null,REF1:NULL,REF2:NULL,AUD_CREATE_DT:2017-01-12 16:55:14,AUD_CREATE_USER:JOB_CONTROL,AUD_MODIFY_DT:2017-01-12}Looking for a way to grep the DATA_DATE and START_TIME of the first json in the nested json (like the one highlighted) in variable a.Any help?Okay to use awk,sed or shell scripting. 
How to grep/print value of a key in json that is stored in a variable?
shell script;awk;grep;json