A shell script that accesses a server over SSH and copies a specific directory

remoteCopy.sh

#!/bin/bash 

# Set the variables. 
server_ip="192.168.1.100" 
username="user" 
password="passwd" 
source_directory="/home/user/my_directory" 
destination_directory="/opt/my_directory" 

# Connect to the server. 
ssh -i ~/.ssh/id_rsa $username@$server_ip 

# Copy the directory. 
cp -r $source_directory $destination_directory 

# Disconnect from the server. 
exit