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No-Brainer elm script

#!/bin/ksh
# use the elm "pipe" feature to automatically detect which type of privacy
# enchanced mail the message is under, and then automatically send the message
# with the correct options to the cipher program.
# usage from elm
#			| elm2pem
# you can also put this as the default reader in elm, but sometimes it barfs
# if you get a pgp signed message and don't have the sender's key.
umask 077
clear
cat > $HOME/.tmp/mbox.enc
PGP="BEGIN PGP"
PEM="BEGIN PRIVACY"

if grep "$PGP" $HOME/.tmp/mbox.enc > /dev/null
then
	pgp -m $HOME/.tmp/mbox.enc
elif grep "$PEM" $HOME/.tmp/mbox.enc > /dev/null
then
	ripem -d -i $HOME/.tmp/mbox.enc | more -d
else
	more $HOME/.tmp/mbox.enc
fi

rm -f $HOME/.tmp/mbox.enc