diff --git a/aws/README.md b/aws/README.md
index 09a5a6f..88b0c7c 100644
--- a/aws/README.md
+++ b/aws/README.md
@@ -66,3 +66,61 @@ $ aws ec2 describe-instances help
 
 
 
+## SSH
+
+* login
+
+  ```bash
+  $ ssh -i sshprivatekey.pem ubuntu@ec2-3-0-55-149.ap-southeast-1.compute.amazonaws.com 
+  ```
+
+  
+
+* copy
+
+  ```bash
+  $ scp -i $HOME/aws/netyth_razerpay.pem ./razerpay-schema-df.sql ubuntu@ec2-3-0-55-149.ap-southeast-1.compute.amazonaws.com:/home/ubuntu/xx.sql
+  ```
+
+  
+
+* sql
+
+  ```bash
+  $ mysql --host=mysql.db.com --user=admin --password=12311
+  $ mysql --host=razerpay.cx77tjbbiuga.ap-southeast-1.rds.amazonaws.com --user=admin --password=....
+  
+  // export databse schema to sql text
+  $ mysqldump -u username -p database_to_backup > backup_name.sql
+  ```
+
+  ```sql
+  mysql> CREATE DATABASE razerpay_singapore_prod;
+  mysql> exit
+  ```
+
+  ```bash
+  // import sql schema to database
+  $ mysql -u admin -p razerpay_singapore_prod < file.sql
+  ```
+
+  
+
+  ```sql
+  mysql> SHOW DATABASES;
+  mysql> USE DATABASE;
+  mysql> SHOW TABLES;
+  mysql> DESCRIBE <table>;    // display table schema
+  
+  mysql> SELECT user_id FROM df_receive_log;
+  
+  mysql> DROP DATABASE `db-name`;   // delete database. use backtick if name have dash
+  
+  mysql> exit
+  
+  mysql> SET GLOBAL log_bin_trust_function_creators = 1;
+  ```
+
+  
+
+* ss
\ No newline at end of file