Generates a option menu from the list of entries at "/etc/hosts" then starts a ssh connection command for selected item number.

sshMenuFromEtcHosts.sh

#!/bin/bash
export PATH=/bin:/sbin:/usr/local/bin:/usr/local/sbin

while read -a E
do
  IPADDRESS_LIST=( ${IPADDRESS_LIST[@]} "${E[0]}" )
  HOSTNAME_LIST=( ${HOSTNAME_LIST[@]} "${E[1]}" )
done < <(egrep -v "^127.0.0.1|^::1" /etc/hosts |sort -k2 -k1)
unset E

echo -e "\n${0}"
echo "+-----------------------------------------------+"
echo "|       Known Host List from '/etc/hosts'       |"
echo "+-----------------------------------------------+"

for N in ${!HOSTNAME_LIST[@]}
do
  echo "$N) ${HOSTNAME_LIST[$N]} (${IPADDRESS_LIST[$N]})"
done
unset N

echo "+-----------------------------------------------+"
echo "| Type the related number and press ENTER       |"
echo "| or press CTRL+C for back to shell.            |"
echo "+-----------------------------------------------+"

for E in ${!HOSTNAME_LIST[@]}
do
  CHOICE_MAX=$E
done
unset E

while true
do
  read -s -n $((CHOICE_MAX%10)) CHOICE
  [[ ${!HOSTNAME_LIST[@]} =~ $CHOICE ]] && break
done

ssh -o "StrictHostKeyChecking=no" -o "GlobalKnownHostsFile=/dev/null" -o "TCPKeepAlive=yes" root@${HOSTNAME_LIST[$CHOICE]}