对于字符串数组的每个元素，bash 无法识别 for 循环中的条件

目标

我用来让用户将密码插入与某些模板文件whiptail一起使用的文件中。envsubst

whiptail清单

为了渲染东西，whiptail我使用以下内容：

declare -A availableServices=(
    [grafana]="Grafana Dashboard"
    [influxdb]="InfluxDB v1.x TSDB"
    [node-red]="Node-RED Flow UI"
    [portainer]="Portainer Container Mgmt"
)

# Render TUI
function askGenerateCredential() {
    local message="Set Password for particular Service\n
                Press <SPACEBAR> to Select \n
                Press <Enter> to Skip
                "
    local arglist=()
    
    # Generate a String for Whiptail Checkboxes
     # FORMAT: "<INDEX> <DESCRIPTION> <OFF>"
    for index in "${!availableServices[@]}";
    do
        # Default all Services are NOT-Selected (OFF)
        arglist+=("$index" "${availableServices[$index]}" "OFF")
    done
    SELECTED_SERVICES+=$($WHIPTAIL --title "Available Services within Populo" \
                --notags --separate-output \
                --ok-button Next \
                --nocancel \
                --checklist "$message" $LINES $COLUMNS $(( LINES - 12 )) \
                -- "${arglist[@]}" \
                3>&1 1>&2 2>&3)
}

theSELECTED_SERVICES是一个声明为的数组

declare -a SELECTED_SERVICES=()

渲染效果很好，但是我的if else脚本中有一个特定条件，无法根据上面数组中的选定服务执行特定命令。

askGenerateCredential
if [ -z "$SELECTED_SERVICES" ]; then
    echo "No Services were selected. Exiting..."
    exit 1
else
    for service in "${SELECTED_SERVICES}";
    do
        if [ "$service" == "influxdb" ]; then
            echo "Setting Credentials for InfluxDB"
            setInfluxDBCredentials
        elif [ "$service" == "grafana" ]; then
            echo "Setting Credentials for Grafana"
            setGrafanaCredentials
        elif [ "$service" == "node-red" ]; then
            echo "Setting Credentials for node-RED"
            setNodeRedCredentials
        elif [ "$service" == "portainer" ]; then
            echo "Setting Credential for Portainer"
            setPortainerCredentials
        fi
    done
fi

添加上述块后，当我通过UI0选择多个值时，我的脚本会以代码退出。whiptail相反，当我在 UI 中只选择一个值时，会调用相应的函数。

我在这里做错了什么？我希望根据service变量，调用相应的函数而不退出脚本。

代码

#!/bin/env bash

WHIPTAIL=$(which whiptail)

if [ -z $WHIPTAIL ]
then
    echo "This script requires whiptail to render the TUI."
    exit 1
fi

declare -a SELECTED_SERVICES=()

LINES=$(tput lines)
COLUMNS=$(tput cols)


declare -A availableServices=(
    [grafana]="Grafana Dashboard"
    [influxdb]="InfluxDB v1.x TSDB"
    [node-red]="Node-RED Flow UI"
    [portainer]="Portainer Container Mgmt"
)

function askGenerateCredential() {
    local message="Set Password for particular Service\n
                Press <SPACEBAR> to Select \n
                Press <Enter> to Skip
                "
    local arglist=()
    
    # Generate a String for Whiptail Checkboxes
     # FORMAT: "<INDEX> <DESCRIPTION> <OFF>"
    for index in "${!availableServices[@]}";
    do
        # Default all Services are NOT-Selected (OFF)
        arglist+=("$index" "${availableServices[$index]}" "OFF")
    done
    SELECTED_SERVICES+=$($WHIPTAIL --title "Available Services within Populo" \
                --notags --separate-output \
                --ok-button Next \
                --nocancel \
                --checklist "$message" $LINES $COLUMNS $(( LINES - 12 )) \
                -- "${arglist[@]}" \
                3>&1 1>&2 2>&3)
}

function setInfluxDBCredential() {
    echo "set admin password env var for influxdb"
}

function setGrafanaCredential() {
    echo "set admin password env var for grafana"
}

function setNodeRedCredential() {
    echo "set admin password env var for node-REd"
}

function setPortainerCredential() {
    echo "set password file for portainer"
}

askGenerateCredential
if [ -z "$SELECTED_SERVICES" ]; then
    echo "No Services were selected. Exiting..."
    exit 1
else
    for service in "${SELECTED_SERVICES}";
    do
        if [ "$service" == "influxdb" ]; then
            echo "Setting Credentials for InfluxDB"
            setInfluxDBCredentials
        elif [ "$service" == "grafana" ]; then
            echo "Setting Credentials for Grafana"
            setGrafanaCredentials
        elif [ "$service" == "node-red" ]; then
            echo "Setting Credentials for node-RED"
            setNodeRedCredentials
        elif [ "$service" == "portainer" ]; then
            echo "Setting Credential for Portainer"
            setPortainerCredentials
        fi
    done
fi

编辑

根据建议，我${SELECTED_SERVICES[@]}在 for 循环中进行了尝试，并添加了一个echo "$service"能够循环遍历数组的函数，但是if条件不会被触发。