shell中空格怎么表示 linuxshell判断文件是否存在？

linuxshell判断文件是否存在？

1. test命令的-a参数可用于确定该文件是否存在于Linux shell中。它可以通过if结构来判断。

2. 带~/T/塞洛·皮例如，要检测此文件并将其删除（如果存在），示例代码如下：

fi

3。测试效果如下图所示

代码1:

如果[test-d folder name]那么

echo“文件夹存在！“

else

echo”文件夹不存在！“

fi

代码2:

test-d文件夹&；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp；amp

shell中空格怎么表示 shell脚本检查文件是否存在 shell if判断文件是否存在

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