diff --git a/pong.go b/pong.go
index 82461eb..c7b150b 100644
--- a/pong.go
+++ b/pong.go
@@ -42,7 +42,6 @@ func main() {
 		goping.Ping(flag.Arg(0), 48, 5)
 		os.Exit(0)
 	default:
-		fmt.Println("ping")
 		addressDial := flag.Arg(0)
 		portDial := flag.Arg(1)
 		if *address != "" {
diff --git a/readme.md b/readme.md
index f74f19b..59b8fe0 100644
--- a/readme.md
+++ b/readme.md
@@ -3,4 +3,29 @@ pong www.baidu.com
 pong www.baidu.com 443
 pong www.baidu.com 443 -t 1
 pong www.baidu.com 443 -t 1 -k udp
-pong -a www.baidu.com -p 443 -k tcp -t 3
\ No newline at end of file
+pong -a www.baidu.com -p 443 -k tcp -t 3
+
+
+## build
+cd /root
+rm -rf pong
+git clone https://sre:N7q5BcbQrjpEav_iRCKBta_pVyFhUE_V@git.sre.ink/sre/pong.git
+cd pong
+CGO_ENABLED=0 GOOS=linux GOARCH=amd64 GO111MODULE=on GOPROXY="https://goproxy.cn,direct" go build -v -a -o pong pong.go
+rm -rf /usr/bin/pong
+mv pong /usr/bin/
+pong www.baidu.com
+
+
+ 
+
+## build for arm64
+CGO_ENABLED=0 GOARM=7 GOOS=linux GOARCH=arm64 GO111MODULE=on GOPROXY="https://goproxy.cn,direct" go build -v -a -o mupload main.go
+
+## build on cmd
+set CGO_ENABLED=0
+set GO111MODULE=on
+set GOOS=linux
+set GOARCH=amd64
+set GOPROXY="https://goproxy.cn,direct"
+go build -o wechat main.go
\ No newline at end of file