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                定義全局變量 ```bash export GOSUNCN=100 ``` 配置文件永久生效 ```bash source ~/.bash_profile ``` 刪除變量 ```bash unset GOSUNCN ``` 定義數組 ```bash GOSUNCN=('A' 'B' 'C' 'D') ``` 取出數組中的值 ```bash ${數組名[索引]} ${GOSUNCN[2]} ``` 精確賦值 ```bash GOSUNCN[2]='3' ``` 訪問數組所有元素 ```bash ${GOSUNCN[@]} ``` 統計數組元素個數 ```bash ${#GOSUNCN[@]} ``` 訪問數組元素的索引 ```bash ${!GOSUNCN[@]} ``` 指定起始索引 ```bash ${GOSUNCN[@]:1} # 從第二個(索引1)開始遍歷 ${GOSUNCN[@]:3} # 從第四個(索引3)開始遍歷 ``` 指定起始索引和遍歷個數 ```bash ${GOSUNCN[@]:1:2} # 從第二個(索引1)開始遍歷,遍歷2個 ${GOSUNCN[@]:3:3} # 從第四個(索引3)開始遍歷,遍歷3個 ``` 關聯數組聲明 ```bash declare -A GOSUNCN ``` 賦值語句 ```bash GOSUNCN[name]='zhilian' GOSUNCN[age]=29 ``` 獲取值 ```bash ${GOSUNCN[name]} ${GOSUNCN[age]} ``` 整體賦值 ```bash GOSUNCN=([name]='Apollo' [age]=22) ```
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