BASH语法错误-[：缺少`]'

McCourt2364 发表于 Dev

麦考特2364

我是Bash编程的新手，可能真的很傻。

基本上，我正在编写一段脚本来ping通传入的IP地址，它将从中获取传输的数据包，并根据丢失的数据包数量返回错误或通过消息。

但是，每当我从终端运行脚本时，都会不断收到消息-

./ipGatewayCheck.sh: line 13: [: missing]'`

这是我的代码：

#!/bin/bash

healthy_status=0

warning_status=10

critical_status=100

for gateway in $@

do
RESULT=`ping -q -c 10 $gateway | grep 'packets transmitted' | awk '{print $6}' | tr -d "%"`
echo "$RESULT"
if [ $RESULT -eq $healthy_status ]; then
  echo "No Issue - IP Address is pinging"
elif [ $RESULT -ge $warning_status && -le $critical_status ]; then
  echo "Warning - Issue with packet loss on this IP Address"
elif [ $RESULT -eq $critical_status ]; then
  echo "Critical - 100% packet loss on this IP Address"
fi

done

任何帮助将不胜感激。

阿努巴瓦

您需要使用[[和]]才能&&在方括号内使用：

if [[ "$RESULT" -eq "$healthy_status" ]]; then
  echo "No Issue - IP Address is pinging"
elif [[ "$RESULT" -ge "$warning_status" && "$RESULT" -le "$critical_status" ]]; then
  echo "Warning - Issue with packet loss on this IP Address"
elif [[ "$RESULT" -eq "$critical_status" ]]; then
  echo "Critical - 100% packet loss on this IP Address"
fi

另外，您也可以在BASH中使用((和))：

if (( RESULT == healthy_status )); then
  echo "No Issue - IP Address is pinging"
elif (( RESULT == warning_status && RESULT < critical_status )); then
  echo "Warning - Issue with packet loss on this IP Address"
elif (( RESULT == critical_status )); then
  echo "Critical - 100% packet loss on this IP Address"
fi

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