注意，这只能防止把输出重定向到现有文件；如果使用cp或mv覆盖文件，这个变量没有任何帮助。

Note that this can only save you while you're trying to redirect output to an existing file — it isn't any help if you're using cp or mv to overwrite the file.

youdao

在最后一种情况中，创建网站时所创建的文件会覆盖该文件夹中任何与所创建的文件同名的现有文件。

In the last case, the files that are created with the Web site overwrite any files with the same name that are already in the folder.

youdao

在最后一种情况中，创建网站时所创建的文件会覆盖该文件夹中任何与所创建的文件同名的现有文件。

In the last case, the files that are created with the Web site overwrite any files with the same name that are already in the folder.

youdao