connect.sh

#!/bin/sh
if [ -n "$*" ];
then
	if [ "$*" == "--help" ] || [ "$*" == "-h" ];
	then
		echo $0 '[username]';
		exit;
	fi
	user="$*";
else
	user=`whoami`;
fi

hosts=`cat ~/.ssh/known_hosts | awk '{ print $1 }' | awk -F"," '{ gsub(/\[|\]/, "", $1); gsub(/\:/, " -p ", $1); gsub(/$/, ",", $1); print $1 }'`
hosts=`echo $hosts | sed 's/, /,/g'`

OLD_IFS="$IFS"
IFS=","
hosts=( $hosts )
IFS="$OLD_IFS"

echo -e "\\033[32m### Choose one of them:  ###\\033[0m"

for (( i=0; $i<${#hosts[@]}; i++ )) 
do
	echo -e "\\033[1m${i}\\033[0m"\) "\\033[36m${user}\\033[0m""\\033[33m@\\033[0m"${hosts[$i]}
done

echo
read -p "Your choose: " number

if [ -n "${hosts["$number"]}" ];
then
	ssh ${user}@${hosts[$number]} -A
else
	echo 'Out of range!';
fi