> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/life/di-si-bu-fen-unix-zhi-wai/10.-unix-fu-wu/10.3.-ji-ji-ji.md).

# 10.3 急！急！急！

有时候，你只是需要就某个问题得到一个快速、简短的回答。咨询顾问不是你要找的东西——当你只想赶紧得到一个问题的答案时，寻找合适顾问所花的时间成本高得让人望而却步。

好在许多公司提供电话支持服务。大多数 UNIX 厂商都提供电话技术支持，专门解决与自家系统有关的问题、回答相关疑问。你应该联系你的厂商，问问他们能否提供这项服务。不过，别指望这项服务是免费的——让 UNIX 大师来接电话，跟让他们去干 UNIX 大师平时干的那些事一样贵。

提供这类服务的独立顾问要少一些，因为这意味着得有人整天守在电话机旁。理想情况下，电话旁应该有好几个人。如果你与一家独立公司签约，务必确认他们对你的系统有经验。另外，你还应该问清楚他们的服务时段。即便你不打算在晚上干活，能在周五晚上抛出一个问题、周一早上收到答案，也是件美事。这类服务中有一家叫 Dial-A-Guru（Specialized Systems Consultants, Inc.）。

除了打电话，另一种选择是电子大师。许多 UNIX 公司都有 uucp 或某个电子邮件地址，你可以把 bug 或问题发过去。对性质更一般的问题，可以试试 Usenet（参见 [UNIX 地下世界](/life/di-si-bu-fen-unix-zhi-wai/9.-unix-di-xia-shi-jie.md)）。我们就曾在不到两天的时间里，收到过来自半个地球之外、针对高度技术性问题的答案。唯一的缺点是，你要是问的问题太简单，别人就会寄来措辞难听的信——你没有任何借口不先去手册里查一查。

当你的磁盘被糟蹋了（也就是被砸烂、烧焦、电击穿）时，你会求助于 fsck 来修复损伤，用备份磁带来恢复文件。但有时候，这两样都不够用。例如，你可能备份得不够勤，又一不留神删掉了一个文件。

有一家公司能给你带来一线希望（自称有效率达 99.5%），那就是 Gawain Group，它提供一款名为 Data Rescue Service 的产品。你只需把磁盘寄给他们，他们就会尽量抢救出里面能救的东西——包括超级块、i 节点和数据块，如果救得出来的话。然后，双手合十祈祷吧。


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