diff --git a/AWS-CLI-with-SeaweedFS.md b/AWS-CLI-with-SeaweedFS.md
index 6032912..cc831f9 100644
--- a/AWS-CLI-with-SeaweedFS.md
+++ b/AWS-CLI-with-SeaweedFS.md
@@ -37,6 +37,10 @@ make_bucket: newbucket3
 $ aws --endpoint-url http://localhost:8333 s3 cp /etc/passwd s3://newbucket3
 upload: ../../../../../etc/passwd to s3://newbucket3/passwd
 
+# copy an object
+$ aws --endpoint-url http://localhost:8333 s3 cp s3://newbucket3/passwd s3://newbucket3/passwd.txt
+copy: s3://newbucket3/passwd to s3://newbucket3/passwd.txt
+
 # remove an object
 $ aws --endpoint-url http://localhost:8333 s3 rm s3://newbucket3/passd
 delete: s3://newbucket3/passd