# gzip Slackware 所附带的最古老的压缩工具就是 `gzip(1)` 了。它一次只能处理一个文件。与 `zip` 能够压缩和打包不同，`gzip` 只能压缩。你第一感觉这是个缺点，但实际上这是它的强大之处。UNIX 的哲学之一就是让程序只做一件事并做到最好。这就让程序们能以无限多的组合方式来完成工作。要想压缩一个（或多个）文件，只需将它们作为参数传递给 `gzip` 。 ``` darkstar:~$ gzip /tmp/large_file ``` 解压就使用 `gunzip`，它会解压出文件并删除原来的压缩文件。 ``` darkstar:~$ gunzip /tmp/large_file.gz darkstar:~$ ls /tmp/large_file* /tmp/large_file ``` 但如果我们不希望删除压缩文件，只想查看内容的话怎么办？`zcat` 程序能读取 `gzip` 文件，解压到内存并将内容传输到标准输出（也就是终端屏幕，除非使用了重定向。重定向详见“[输入输出重定向](https://slackwarecn.gitbook.io/slackbook_cn/chapter_05/input_and_output_redirection)”）。 ``` darkstar:~$ zcat /tmp/large_file.gz Wed Aug 26 10:00:38 CDT 2009 Slackware 13.0 x86 is released as stable! Thanks to everyone who helped make this release possible -- see the RELEASE_NOTES for the credits. The ISOs are off to the replicator. This time it will be a 6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD. We're taking pre-orders now at store.slackware.com. Please consider picking up a copy to help support the project. Once again, thanks to the entire Slackware community for all the help testing and fixing things and offering suggestions during this development cycle. ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://slackwarecn.gitbook.io/slackbook_cn/chapter_04/archive_and_compression/gzip.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.