shell脚本自动登录服务器

#!/bin/sh
function trapper(){
         trap 'exit 1'　EXIT QUIT;
}

serverArr=(
        guard-boot-001,10.1.17.12
        guard-boot-002,10.1.17.13
        guard-boot-003,10.1.18.231
        guard-boot-004,10.1.18.232
);

function printServers(){
        echo '===================================SERVERS===================================';
        for ((i=0; i< ${#serverArr[*]}; i++))
        do
                serverName=$(echo ${serverArr[$i]}|cut -d ',' -f 1);
                serverIP=$(echo ${serverArr[$i]}|cut -d ',' -f 2);
                echo -e "${i}\t${serverName} \t\t\t ${serverIP}";
        done
        echo '===================================++END++===================================';
}

function conn(){
        index=$1;
        for ((i=0; i<${#serverArr[*]}; i++))
        do
                if [ $index -eq $i ]
                then
                        serverIP=$(echo ${serverArr[$i]}|cut -d ',' -f 2);
                fi
        done;
        echo "Connecting to $serverIP";
        ssh appweb@$serverIP;
}

function main(){
        while true
        do
                trapper;
                clear;
                printServers;
                read -p '输入服务器编号' num;
                conn $num;
        done;
}
main;