delete emails

#!/bin/sh
if [ $1 ]; then
echo "`exim -bpru | tr 'n' + | sed -e "s/++/=/g" | tr -d + | tr = 'n' | grep "$1" | awk {'print $3'} | xargs exim -Mrm | wc -l` E-Mails deleted"
else
echo "If you want to delete ALL the `exim -bpc` E-Mails on mail queue, give this command:"
echo "exim -bp|grep "<"|awk {'print $3'}|xargs exim -Mrm"
echo "or even better"
echo "exim -bp | awk '/^ *[0-9]+[mhd]/{print "exim -Mrm " $3}' | bash"
echo ""
echo "If you want to delete only mails with an specific sender/recipient, use:"
echo "$0 [sender/recipient]"
fi