Exemplos de Uso
$
grep "Completed" /var/log/exim_mainlog | grep -oP "from=<[^>]+>" | sort | uniq -c | sort -rn | head -20
$
grep "$(date +%Y-%m-%d)" /var/log/exim_mainlog | grep "Completed" | awk "{print $2}" | cut -d: -f1 | sort | uniq -c