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shell：脚本数组list的操作整理

 1 year ago
source link: https://blog.51cto.com/mouday/5867861
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shell：脚本数组list的操作整理

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彭世瑜 2022-11-18 10:40:04 ©著作权

文章标签 数组 bash 数组长度 文章分类 Java 编程语言 yyds干货盘点 阅读数224

# 定义数组，等号两边不要有空格
list=(
    "A"
    "B"
)

# 数组长度
echo ${#list[@]} # 2

# 获取数组元素
echo ${list[1]} # B

# 输出所有值
echo ${list[@]} # A B

# 循环打印数组
for var in ${list[@]}; do
    echo "var = ${var}"
done

# 输出：
# var = A
# var = B

字符串转数组

# 字符串转数组
str="A B C"

arr=($str) 

# 数组长度
echo ${#arr[@]} # 3

# 所有数组元素
echo ${arr[@]}
# A B C

# 字符串转数组
str="A,B,C"

arr=(`echo $str | tr ',' ' '`) 

# 数组长度
echo ${#arr[@]} # 3

# 所有数组元素
echo ${arr[@]}
# A B C

参考
 Shell脚本list史上最全教程

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