diff --git a/1 b/1
new file mode 100644
index 0000000..2fc07fd
--- /dev/null
+++ b/1
@@ -0,0 +1,6 @@
+PING 8.8.8.8 (8.8.8.8): 56 data bytes
+64 bytes from 8.8.8.8: seq=0 ttl=54 time=82.173 ms
+
+--- 8.8.8.8 ping statistics ---
+1 packets transmitted, 1 packets received, 0% packet loss
+round-trip min/avg/max = 82.173/82.173/82.173 ms
diff --git a/2 b/2
new file mode 100644
index 0000000..0ea9a12
--- /dev/null
+++ b/2
@@ -0,0 +1,6 @@
+PING 8.8.8.8 (8.8.8.8): 56 data bytes
+64 bytes from 8.8.8.8: seq=0 ttl=54 time=81.366 ms
+
+--- 8.8.8.8 ping statistics ---
+1 packets transmitted, 1 packets received, 0% packet loss
+round-trip min/avg/max = 81.366/81.366/81.366 ms
diff --git a/cat b/cat
new file mode 100644
index 0000000..a75844d
--- /dev/null
+++ b/cat
@@ -0,0 +1,6 @@
+PING 8.8.8.8 (8.8.8.8): 56 data bytes
+64 bytes from 8.8.8.8: seq=0 ttl=54 time=81.466 ms
+
+--- 8.8.8.8 ping statistics ---
+1 packets transmitted, 1 packets received, 0% packet loss
+round-trip min/avg/max = 81.466/81.466/81.466 ms
diff --git a/echo b/echo
new file mode 100644
index 0000000..8315eef
--- /dev/null
+++ b/echo
@@ -0,0 +1 @@
+the input device is not a TTY
diff --git a/upcheck.sh b/upcheck.sh
index 5bbbeb9..485f44a 100755
--- a/upcheck.sh
+++ b/upcheck.sh
@@ -5,7 +5,7 @@ LOGFILE=./upcheck.log
 CONTAINER=proxywg_socks_c
 PINGHOST=8.8.8.8
 
-CHECK_CONTAINER="$(docker ps | grep $CONTAINER | wc -l)"
+CHECK_CONTAINER="$(/usr/bin/docker ps | grep $CONTAINER | wc -l)"
 if [ "$CHECK_CONTAINER" == "0" ]; then
 	echo "[" $COUNT "]" `date +%Y%m%d.%H%M%S` "CONTAINER FAIL" >> $LOGFILE
 	echo 'container is not started'
@@ -19,21 +19,25 @@ MAXPING=30
 while [ $COUNT -le $MAXPING ]
 do
 	COUNT=`expr $COUNT + 1`
-	RESULT="$(docker exec -it $CONTAINER ping -c 1 -W 1 $PINGHOST > /dev/null && echo 'pass' || echo 'fail')"
+	/usr/bin/docker exec -it $CONTAINER /bin/sh -c 'ping -c 1 -W 1 '$PINGHOST' > /dev/null && exit 0 || exit 1'
 
-	if [ "$RESULT" == "pass" ]; then
-		echo "[" $COUNT "]" `date +%Y%m%d.%H%M%S` "PING OK" >> $LOGFILE
+	if [ $? == 0 ]; then
+		echo "["$COUNT"]" `date +%Y%m%d.%H%M%S` $? >> $LOGFILE
 		exit 0
 	fi
 
-	echo "[" $COUNT "]" `date +%Y%m%d.%H%M%S` "PING FAIL" >> $LOGFILE
+	if [ $? == 1 ]; then
+		echo "["$COUNT"]" `date +%Y%m%d.%H%M%S` $? >> $LOGFILE
 
-	if [ $COUNT -ge 29 ]; then
-		#echo 'container is not good'
-		echo "[" $COUNT "]" `date +%Y%m%d.%H%M%S` "PING FAIL TOTALY" >> $LOGFILE
-		docker compose down
-		docker compose up -d
+		if [ $COUNT -ge 29 ]; then
+			echo "["$COUNT"]" `date +%Y%m%d.%H%M%S` "PING FAIL TOTALY" >> $LOGFILE
+			docker compose down
+			docker compose up -d
+			exit 0
+		fi
+		sleep 1
+	else
+		echo "["$COUNT"]" `date +%Y%m%d.%H%M%S` $? >> $LOGFILE
 		exit 0
 	fi
-	sleep 1
 done