#!/bin/bash
bucket="bucket_name"
awk -v b="$bucket" '{sub(/([^[:blank:]]+[[:blank:]]+){3}/, "&" b "/")} 1' << EOF
2014-01-10 18:23:25 0 Andy/ADPTER/
2014-01-10 18:23:36 503 Sandy/ADPTER/ACCOUNTTYPE MAP.csv
2014-01-10 18:23:38 516 John/ADPTER/CITY MAP.csv
2014-01-10 18:23:38 398 Wendy/ADPTER/COUNTRY MAP.csv
2014-01-10 18:23:38 11117 Andy/ADPTER/CURRENCY MAP.csv
2014-01-10 18:23:38 260 Sandy/ADPTER/GENDER MAP.csv
2014-01-10 18:23:39 466 John/ADPTER/STATE MAP.csv
2014-01-10 18:23:40 373 Jim/ADPTER/UNITS MAP.csv
EOF
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