I have a json file which needs to be restructured. The following is the code. while IFS='' read -r line || [[ -n $line ]]; do    COUNT=$(( $COUNT + 1 ))    #echo [$COUNT]    [ $COUNT -lt 5 ] && continue    sj=`echo $line | jq ._source`    index=`echo $line | jq ._index | tr -d ''`    itype=`echo $line | jq ._type| tr -d ''`    echo '{ index : { _index :'$index',_type:'$itype'}}' >> bulk_result.bulk    echo $sj >> bulk_result.bulk#echo $COUNT lines processed from file $1done < $1echo $COUNT lines processed from file $1Basically, the program is reading  a json record for example,{_index:index1,_type:rm,_id:AVPkyS9w,_score:1,_source:{timestamp:2016-04-05T05:00:00,token:8eb38d14,tag:logs.rm,message:CouchbaseConnectSuccess,bucket=srmobjects,logsource:rm.log,RM_pw:,component:rm-01-NFR,RM_un:,timeEpochMs:1459832400.248,RM_bucket:srmobjects,RM_eventName:CouchbaseConnectSuccess}}and converting it to the following { index : { _index :index1,_type:rm}}{ RM_eventName: FcgiClose, timeEpochMs: 1459832435.293, component: rm-04-NFR, logsource: rm.log, message: FcgiClose,requestIndex=0, tag: logs.rm, timestamp: 2016-04-05T05:00:35 }The file size is about 4Gb . The code is taking a lot of time (in hours) in processing it.  Is there an efficient way to make this faster ? 
JSON Parsing in Bash
json;bash