Unmounting the Amazon EFS
To unmount the Amazon EFS:
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                                                        On the on-premise Linux box, run the following commands to delete the mounted content: sudo umount ~/efs rm -rf ~/rfs 
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                                                        Run the following commands to disconnect from the client VPN endpoint: use ps -ef | grep openvpn sudo killall -11 openvpn use ps -ef | grep openvpn