linux touch,chattr指令详解及用法
<p><strong> linux touch,chattr指令详解</strong></p>
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man touch</p>
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<code class="bash plain">NAME </code>
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<code class="bash spaces"> </code><code class="bash functions">touch</code> <code class="bash plain">- 更改文件的时间戳 </code>
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<code class="bash plain">SYNOPSIS </code>
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<code class="bash spaces"> </code><code class="bash functions">touch</code> <code class="bash plain">... FILE... </code>
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<code class="bash plain">DESCRIPTION </code>
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<code class="bash spaces"> </code><code class="bash plain">更新文件的atime和mtime为现在的时间 </code>
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<code class="bash spaces"> </code><code class="bash plain">-a 仅修文件被取用的时间 </code>
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<code class="bash spaces"> </code><code class="bash plain">-c, --no-create 文件不存在是不建立新的档案 </code>
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<code class="bash spaces"> </code><code class="bash plain">-d, --</code><code class="bash functions">date</code><code class="bash plain">=STRING 使用STRING的设定而不使用现在的时间 </code>
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<code class="bash spaces"> </code><code class="bash plain">-m 仅修改文件内容变更的时间 </code>
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<code class="bash spaces"> </code><code class="bash plain">-t STAMP 使用[YY]MMDDhhmm[.ss]格式的时间而不是现在的时间 </code>
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<code class="bash spaces"> </code><code class="bash plain">--help 显示帮助信息 </code>
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<code class="bash spaces"> </code><code class="bash plain">--version 显示版本信息 </code>
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man chattr</p>
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<code class="bash plain">NAME </code>
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<code class="bash spaces"> </code><code class="bash plain">chattr - 更改文件的隐藏属性 </code>
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<code class="bash plain">SYNOPSIS </code>
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<code class="bash spaces"> </code><code class="bash plain">chattr +-= files... </code>
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<code class="bash plain">OPTIONS </code>
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<code class="bash spaces"> </code><code class="bash plain">+：增加一个特殊参数；-：移除一个特殊参数；=：设定参数为设定的参数 </code>
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<code class="bash spaces"> </code><code class="bash plain">A：若有存取此档案或者目录时，他的atime时间戳将不会被修改 </code>
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<code class="bash spaces"> </code><code class="bash plain">S：当进行任何档案的修改，该更懂会“同步”写到磁盘中 </code>
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<code class="bash spaces"> </code><code class="bash plain">a: 这个档案将只能增加数据，而不能删除也不能修改数据，只有root才能修改这个属性 </code>
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<code class="bash spaces"> </code><code class="bash plain">c: 自动将此档案“压缩”，读取的时候自动解压缩，存储的时候先进行压缩后再存储 </code>
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<code class="bash spaces"> </code><code class="bash plain">d: 该档案或目录不会被dump备份 </code>
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<code class="bash spaces"> </code><code class="bash plain">i: 让档案不能被删除、改名、设定连结、无法写入或新增资料，只有root能设定此属性 </code>
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<code class="bash spaces"> </code><code class="bash plain">s: 档案删除时，或被完全移除，无法找回 </code>
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<code class="bash spaces"> </code><code class="bash plain">u: 与s相反，不会完全删除，可以找回删除的档案 </code>
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<p>
这个指令的man page实在太难搞懂了，参考资料之后知识理解了部分内容，所以没有按照man page的内容去写</p>
<p>
man lsattr</p>
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<code class="bash plain">NAME </code>
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<code class="bash spaces"> </code><code class="bash plain">lsattr - 显示文件的隐藏属性 </code>
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<code class="bash plain">SYNOPSIS </code>
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<code class="bash spaces"> </code><code class="bash plain">lsattr [ -RVadv ] [ files... ] </code>
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<code class="bash plain">OPTIONS </code>
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<code class="bash spaces"> </code><code class="bash plain">-R 递归的将子目录的数据也列出来 </code>
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<code class="bash spaces"> </code><code class="bash plain">-V 显示程序的版本信息 </code>
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<code class="bash spaces"> </code><code class="bash plain">-a 将隐藏文件的属性也显示出来 </code>
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<code class="bash spaces"> </code><code class="bash plain">-d 如果是目录，仅列出目录本身的属性而非目录内的文件 </code>
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<p>
感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！</p>
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原文链接：http://blog.csdn.net/mr_avin/article/details/53356739</p>
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