autoupdate: pipe to gunzip

scripts/autoupdate.sh

@@ -19,13 +19,13 @@ board_id=$(cat /etc/board.json | jsonfilter -e '@["model"].id' | sed 's/friendly
 mount -t tmpfs -o remount,size=850m tmpfs /tmp
 rm -rf /tmp/upg && mkdir /tmp/upg && cd /tmp/upg
 set +e
-wget https://ghproxy.com/https://github.com/klever1988/nanopi-openwrt/releases/download/$(date +%Y-%m-%d)/$board_id$ver.img.gz -O $board_id.img.gz
+wget https://ghproxy.com/https://github.com/klever1988/nanopi-openwrt/releases/download/$(date +%Y-%m-%d)/$board_id$ver.img.gz -O- | gzip -dc > $board_id.img
 if [ $? -eq 0 ]; then
 	wget https://ghproxy.com/https://github.com/klever1988/nanopi-openwrt/releases/download/$(date +%Y-%m-%d)/$board_id$ver.img.md5 -O md5sum.txt
 	echo -e '\e[92m今天固件已下载，准备解压\e[0m'
 else
 	echo -e '\e[91m今天的固件还没更新，尝试下载昨天的固件\e[0m'
-	wget https://ghproxy.com/https://github.com/klever1988/nanopi-openwrt/releases/download/$(date -d "@$(( $(busybox date +%s) - 86400))" +%Y-%m-%d)/$board_id$ver.img.gz -O $board_id.img.gz
+	wget https://ghproxy.com/https://github.com/klever1988/nanopi-openwrt/releases/download/$(date -d "@$(( $(busybox date +%s) - 86400))" +%Y-%m-%d)/$board_id$ver.img.gz -O- | gzip -dc > $board_id.img
 	if [ $? -eq 0 ]; then
 		wget https://ghproxy.com/https://github.com/klever1988/nanopi-openwrt/releases/download/$(date -d "@$(( $(busybox date +%s) - 86400))" +%Y-%m-%d)/$board_id$ver.img.md5 -O md5sum.txt
 		echo -e '\e[92m昨天的固件已下载，准备解压\e[0m'
@@ -41,8 +41,8 @@ if [ `md5sum -c md5sum.txt|grep -c "OK"` -eq 0 ]; then
 	echo -e '\e[91m固件HASH值匹配失败，脚本退出\e[0m'
 	exit 1
 fi
-echo -e '\e[92m准备解压镜像文件\e[0m'
-pv $board_id.img.gz | gunzip -dc > FriendlyWrt.img && rm $board_id.img.gz
+
+mv $board_id.img FriendlyWrt.img
 
 bs=`expr $(cat /sys/block/mmcblk0/size) \* 512`
 ../truncate -s $bs FriendlyWrt.img