shell 数组中 @ 跟 * 的区别

关于在shell脚本中数组变量中 “*”跟 “@” 区别

“*”当变量加上“” 会当成一串字符串处理.

“@”变量加上“” 依然当做数组处理.

在没有加上“” 的情况下 效果是等效的.

#!/bin/bash

 

array=(1 2 3)

echo "case 1"

for line in "${array[@]}"

do

echo $line

done

 

echo "case 2"

for line in "${array[*]}"

do

echo $line

done

 

echo "case 3"

for line in ${array[*]}

do

echo $line

done

echo "case 4"

for line in ${array[@]}

do

echo $line

done

 

输出结果如下：

case 1

1

2

3

case 2

1 2 3

case 3

1

2

3

case 4

1

2

3