Wait for ssh to come up in a Bash script

hurryup.sh

#!/bin/bash
function hurryup () { 
    until ssh -o ConnectTimeout=2 "$1"@"$2"
        do sleep 1
    done
}
hurryup root "10.10.0.3"

# -o ConnectTimeout=2 is a slightly hacky way of getting around not responding to network packets, 
# reporting ssh: connect to host 10.10.0.3 port 22: Operation timed out until it's responsive.

# Then, when the host responding to network packets, the 1 second sleep with happen in-between
# ssh: connect to host 10.10.0.3 port 22: Connection refused as we wait for ssh to come up.