保证底层机器可以访问存储源文件的必备文件系统。

Verify that the underlying machines can access the requisite file systems on which source files are stored.

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atime 是最近访问文件的时间，每当访问文件时，底层文件系统必须记录这个时间戳。

The atime is the last access time of a file, and each time a file is accessed, the underlying file system must record this timestamp.

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一旦批准了通过perl脚本访问底层文件系统，就必须确保cgi脚本不能访问您不想让外部人员访问的文件。

Once you grant access to the underlying filesystem through your Perl script, you must ensure that the CGI script cannot gain access to files that you do not want accessible to the outside world.

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