shell 数组【了解一下】

2024-08-25 22:44:53

数组编程

#!/bin/bash

# array

soft=(

    php

    mysql

    nginx

)

# 输出第一个

echo ${soft[0]}

# 输出所有

echo "This soft total ${soft[@]}"

# 输出数量

echo "This soft count ${#soft[@]}"

# 删除一个元素

unset soft[2]

echo "This soft total ${soft[@]}"

# 临时替换

echo ${soft[@]/php/java}

echo "This soft total ${soft[@]}"

运行结果

# /bin/bash array.sh

php

This soft total php mysql nginx

This soft count 3

This soft total php mysql

java mysql

This soft total php mysql

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