When you’ve logged on to the remotehost using ssh from the localhost, you may want to come back to the localhost to perform some activity and go back to remote host again. In this case, you don’t need to disconnect the ssh session to the remote host. Instead, follow the steps below.
1. Login to remotehost from localhost:
localhost$ ssh -l jsmith remotehost
2. Now you are connected to the remotehost:
3. To come back to the localhost temporarily, type the escape character ~ and Control-Z.
When you type ~ you will not see that immediately on the screen until you press
remotehost$ ~^Z + Stopped ssh -l jsmith remotehost localhost$
4. Back to localhost
Now you are back to the localhost and the ssh remotehost client session runs as a typical UNIX background job, which you can check as shown below:
localhost$ jobs + Stopped ssh -l jsmith remotehost
5. Back to remotehost
You can go back to the remote host ssh without entering the password again by bringing the background ssh remotehost session job to foreground on the localhost.
localhost$ fg %1 ssh -l jsmith remotehost remotehost$