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                # 傳遞參數 - 1.取參數用`$n`來取, `$0`是執行的文件名, `$1`才是第一個參數 ```bash #!/bin/bash # author:菜鳥教程 # url:www.runoob.com echo "Shell 傳遞參數實例!"; echo "執行的文件名:$0"; echo "第一個參數為:$1"; echo "第二個參數為:$2"; echo "第三個參數為:$3"; ``` # `$`符的其他作用 - `$#` 參數個數 - `$$` 當前腳本的進程id - `$!` 后臺運行最后一個進程的id - `$?` 獲取最后一個命令的退出狀態, 0表示沒有錯誤 - `$*` 把所有參數用字符串形式返回 (a.sh 1 2 3 // 輸出1 2 3)
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