bup index --update --xdev \
--exclude ".cache" \
"$HOME" \
- "/var/spool/mail/$USER" \
+ "/var/spool/mail/$LOGNAME" \
|| exit 1
-bup save --name "$USER" \
+bup save --name "$LOGNAME" \
"$HOME" \
- "/var/spool/mail/$USER"
+ "/var/spool/mail/$LOGNAME"
exit_code=$?
-bup ls "$USER" || exit 1
+bup ls "$LOGNAME" || exit 1
exit $exit_code