Sometimes you know only that a file is open at some part of the file system.

有时您只知道在文件系统的某处打开了文件。

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When you want to connect securely to a remote system, first open the PPK file that contains the secret part of the SSH key.

当要安全地连接远程系统时，首先打开包含 SSH 密钥的秘密部分的 PPK 文件。

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Each part of the series develops integral parts of the wiki until it is complete and ready for prime time, with features including file uploading, a calendaring "milestone" system, and an open blog.

本系列教程的每一部分将开发wiki的各个组成部分，直至wiki开发完成并准备好迎接黄金期，具有包括文件上传、日历“里程碑”系统和开放博客等功能。

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