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#!/usr/bin/env bash
# Save piped email to "$1/YYMMDD SUBJECT.eml"
# Don't overwrite existing file
set -o noclobber
message = $( cat)
mail_date = $( <<< " $message " ggrep -oPm 1 '^Date: ?\K.*' )
formatted_date = $( date -f " $mail_date " +%y%m%d)
# Get the first line of the subject, and change / to ∕
subject = $( <<< " $message " ggrep -oPm 1 '^Subject: ?\K.*' | sed 's,/,∕ )
if [ [ $formatted_date = = '' ] ] ; then
echo Error: no date parsed
exit 1
elif [ [ $subject = = '' ] ] ; then
echo Warning: no subject found
fi
echo " ${ message } " > " $1 / $formatted_date $subject .eml " && echo Email saved to " $1 / $formatted_date $subject .eml "
