dedup

gistfile1.sh

#!/usr/bin/env bash


####
# ./dedup FROM TO
#
# move duplicate emails from FROM to TO
####

duplicates=$(grep --no-filename -rE "^To:\s[[:alpha:]]+" $1 | sort | uniq -c | \
    grep -E "[[:blank:]]([2-9]|[[:digit:]]{2,})" | cut -d : -f 2)

for i in $duplicates
do
    n=0
    for f in $(grep -rl "To: $i" $1)
    do
        if [ $n -gt 0 ]
        then
            mv "$f" "$2"
        fi
        n+=1
    done
done

exit 0