#!/bin/bash

if [[ $(id -u) -ne 0 ]]; then
    echo "This script must be run as root"
    exit 1
fi

OWNER=yourusername
TMP_LISTING=/home/$OWNER/tapes/.new.txt
NEW_LISTING=/home/$OWNER/tapes/new.txt

for arg; do
	echo
	echo '---- Start:' $(date);
	mt -f /dev/nst0 status;

	mt -f /dev/nst0 status | grep File >> $NEW_LISTING;

	sg_logs /dev/nst0 -p tc_;
	du "$arg" && tar --index-file=$TMP_LISTING --blocking-factor=512 -cvvf - "$arg" | \
		mbuffer -m 10G -L -P 80 | \
		dd of=/dev/nst0 bs=256K iflag=fullblock;

	cat $TMP_LISTING >> $NEW_LISTING && rm $TMP_LISTING

	echo '---- End:' $(date);
done;

echo
echo '===== End all =====' $(date);
mt -f /dev/nst0 status;
sg_logs /dev/nst0 -p tc_;

chown $OWNER:$OWNER $NEW_LISTING

echo
echo "File index created: $NEW_LISTING"
echo