Shell脚本-在遍历数组时给出错误

Question

我一直在尝试检查已定义数组中一个名称值的If条件 。 我遇到此错误：

main.sh: line 9: [10.247.78.207: command not found
main.sh: line 9: [10.247.78.207: command not found

这是我的代码：

#!/bin/bash

declare -a names=${names:-(10.247.78.207 10.247.78.206)}

for (( i = 0 ; i < ${#names[@]} ; i++ )) 

do

if ["${names[0]}" == "10.247.78.207"]
then 
  echo "hello"
fi
done

Answer 1

declare -a names=${names:-(10.247.78.207 10.247.78.206)}

for (( i = 0 ; i < ${#names[@]} ; i++ )) 

do

if [ "${names[0]}" == "10.247.78.207" ]
then 
  echo "hello"
fi
done

您需要在[和]周围留空格

Answer 2

将["${names[0]}" == "10.247.78.207"]更改为[ "${names[0]}" == "10.247.78.207" ] 。 那是[之前和之后]空间。 希望这能解决您的问题。