Bash:-:-定义空变量作为输出结合换行符\n和column输出

RET=""
declare -a HOST=()
declare -a ALL_SVR=()
declare -a FREESVR=()
for ((i=;i<${#_ALL_AGENT_IP_[@]};i++));do

    # 读取数值;
    INFO=""[`expr ${i} + `]" "${_ALL_AGENT_IP_[i]}" "$(ssh -T -x -p22333 "${_ALL_AGENT_IP_[i]}" "cd ${_PATH_SETUP_SCRIPTS_}/template/;bash ${_PATH_SETUP_SCRIPTS_}/template/status.sh")""

    read SerialNum IpAddr FreeSvr UsedSvr IdleMem Server <<< ${INFO}

    # 当轮循第一台主机前先插入描述
    [[ ${i} ==  ]] && RET+="Num|Addr|Free|Used|Mem|Svr\n"

    RET+="${SerialNum}|${IpAddr}|${FreeSvr}|${UsedSvr}|${IdleMem}M|${Server}\n"
    #RET+="\t${Server}\n"

    # 轮循将所有主机中获取的区服加入数组
    ALL_SVR+=(${Server})

    # 当轮循到最后主机时，重新计算排序获取最大区服
    [[ "${i}" == `expr "${#_ALL_AGENT_IP_[@]}" - ` ]] && { 

        ALL_SVR=($(for s in ${ALL_SVR[@]};do echo ${s};done | sort -rn))
        MaxSvr="${ALL_SVR[0]}"

    }

    [[ ${FreeSvr} -gt  ]] && {

        HOST+=(${IpAddr})
        FREESVR+=(${FreeSvr})

    }

done
#####################################################################################
# 显示获取的数据
echo -e "${RET}" | column -s "|" -t