Created
December 11, 2016 14:29
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Days on which Postfix sent most outgoing emails
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| journalctl -u postfix -o json | jq -r 'select(.MESSAGE | contains("to=")) | .["_SOURCE_REALTIME_TIMESTAMP"]' | awk '{sec=int($1/(1000*1000)); print sec, int(sec/(60*60*24))}' | uniq -f 1 -c | sort -rn | head | while read count stamp day; do printf '%s\t%s\n' "$count" "$(date -Idate -d @$stamp)"; done |
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