add command example
diff --git a/command.sh b/command.sh
new file mode 100755
index 0000000..cc0326a
--- /dev/null
+++ b/command.sh
@@ -0,0 +1 @@
+sudo ./oft --verbose  -i 1@eth0 -i 2@eth1 -i 3@eth3 --disable-ipv6 --host=192.168.2.4 --of-version=1.3 --port=6633 --test-dir=accton