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linux之chattr命令


    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">用来改变文件属性,chattr命令 用来改变文件属性。这项指令可改变存放在ext2文件系统上的文件或目录属性</p>
    <h3 style="color: black; text-align: left; margin-bottom: 10px;">命令语法</h3>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&gt;&nbsp;chattr&nbsp;[-RV][-v&lt;版本编号&gt;][+/-/=&lt;属性&gt;][文件或目录...]</p>
    <h3 style="color: black; text-align: left; margin-bottom: 10px;">命令选项</h3>-R 递归处理，将指定目录下的所有文件及子目录一并处理。-v&lt;版本编号&gt; 设置文件或目录版本。-V <span style="color: black;">表示</span>指令执行过程。+&lt;属性&gt; 开启文件或目录的该项属性。-&lt;属性&gt; 关闭文件或目录的该项属性。=&lt;属性&gt; 指定文件或目录的该项属性。<h3 style="color: black; text-align: left; margin-bottom: 10px;">属性</h3>a：让文件或目录仅供附加用途；b：不更新文件或目录的最后存取时间；c：将文件或目录压缩后存放；d：将文件或目录排除在倾倒操作之外；i：不得任意更动文件或目录；s：保密性删除文件或目录；S：即时更新文件或目录；u：预防意外删除。<h3 style="color: black; text-align: left; margin-bottom: 10px;">用chattr命令防止系统中某个关键文件被修改：</h3>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&gt;&nbsp;chattr&nbsp;+i&nbsp;/etc/my.cnf</p>
    <h3 style="color: black; text-align: left; margin-bottom: 10px;">查看文件属性</h3>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&gt;&nbsp;lsattr&nbsp;/etc/my.cnf</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">----i--------&nbsp;/etc/my.cnf</p>
    <h3 style="color: black; text-align: left; margin-bottom: 10px;"><span style="color: black;">运用</span>chattr对目录中的所有文件应用限制</h3>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">&gt;&nbsp;chattr&nbsp;-R&nbsp;+i&nbsp;./rumenz</p>
    <h3 style="color: black; text-align: left; margin-bottom: 10px;">某个文件只能往里面追加数据，但<span style="color: black;">不可</span>删除，适用于<span style="color: black;">各样</span>日志文件</h3>&gt;&nbsp;chattr&nbsp;+a&nbsp;/var/<span style="color: black;">log</span>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">/a.log</p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">原文链接:https://rumenz.com/rumenbiji/linux-chattr.html
      <span style="color: black;">微X</span>公众号:入门小站
    </p>回复【1001】获取 linux常用命令速查手册回复【10010】获取 阿里云ECS运维Linux系统诊断回复【10012】获取 Linux学习笔记【强悍总结值得一看】回复【10013】获取 shell简明教程<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><span style="color: black;">近<span style="color: black;">期</span></span><span style="color: black;">热</span><span style="color: black;">文</span></span></p>
    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><a style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;">l</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: 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    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><a style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;">L</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;">i</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: 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style="color: black;"><span style="color: black;">之</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;">t</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span 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    <p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><a style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;">L</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: black;"><span style="color: 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