beautify aria2c (only show download progess)

imagesync.sh

@@ -10,7 +10,6 @@ prereqs)
 	copy_exec /sbin/sfdisk
 	copy_exec /sbin/mke2fs
 	copy_exec /sbin/e2fsck
-	copy_exec /usr/bin/xxd
 	copy_file cert /etc/ssl/certs/ca-certificates.crt
         exit 0
         ;;
@@ -165,30 +164,28 @@ print_done
 ##
 
 print_waiting "Downloading root filesystem image"
-# do not complain about missing dht database
-echo '
-00000000: a1a2 0200 0000 0003 0000 0000 5a81 9b23  ............Z..#
-00000010: 0000 0000 0000 0000 0c26 e387 dc94 df37  .........&.....7
-00000020: 41be 919e 5166 4676 60e0 7435 0000 0000  A...QfFv`.t5....
-00000030: 0000 0000 0000 0000                      ........
-'|xxd -r > dht.dat
-
 # --allow-overwrite: do not rename the torrent file
 # --check-integrity: verify downloaded file and do not complain about missing controll file
 # --seed-time=0: do not wait until ratio 1, we seed when we’re booted
 # --summary-interval=0: do not show summary while downloading
 # --console-log-level=error: Only show errors
-# --dht-file-path=dht.dat: use generated dht data file and do not complain
+# --download-result=hide: Do not show download results
 download=true
 while [ "$download" == true ];do
-	aria2c --allow-overwrite --check-integrity --seed-time=0 --summary-interval=0 --console-log-level=error --dht-file-path=dht.dat $torrent
+	aria2c \
+		--allow-overwrite \
+		--check-integrity \
+		--seed-time=0 \
+		--summary-interval=0 \
+		--console-log-level=error \
+		--download-result=hide \
+		$torrent 2>&1 | grep -v 'DHT routing table'
 	if [ $? == 0 ];then
 		download=false
 	else
 		rm rootfs.tar.gz rootfs.torrent
 	fi
 done
-rm dht.dat
 print_done
 
 print_waiting "Comparing installed and remote image"