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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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数据可视化在过去几年中取得了巨大进展。开发人员对可视化产品的期望不再是简单的图表创建工具，而是在交互、性能、数据处理等方面有更高的要求。
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                                    <table class="ibm-data-table" style="width: 100%" border="1" cellspacing="0" cellpadding="5"><tbody>
<tr>
<td width="30">access</td>
<td>确定文件的可存取性</td>
</tr>
<tr>
<td>chdir</td>
<td>改变当前工作目录</td>
</tr>
<tr>
<td>fchdir</td>
<td>参见chdir</td>
</tr>
<tr>
<td>chmod</td>
<td>改变文件方式</td>
</tr>
<tr>
<td>fchmod</td>
<td>参见chmod</td>
</tr>
<tr>
<td>chown</td>
<td>改变文件的属主或用户组</td>
</tr>
<tr>
<td>fchown</td>
<td>参见chown</td>
</tr>
<tr>
<td>lchown</td>
<td>参见chown</td>
</tr>
<tr>
<td>chroot</td>
<td>改变根目录</td>
</tr>
<tr>
<td>stat</td>
<td>取文件状态信息</td>
</tr>
<tr>
<td>lstat</td>
<td>参见stat</td>
</tr>
<tr>
<td>fstat</td>
<td>参见stat</td>
</tr>
<tr>
<td>statfs</td>
<td>取文件系统信息</td>
</tr>
<tr>
<td>fstatfs</td>
<td>参见statfs</td>
</tr>
<tr>
<td>readdir</td>
<td>读取目录项</td>
</tr>
<tr>
<td>getdents</td>
<td>读取目录项</td>
</tr>
<tr>
<td>mkdir</td>
<td>创建目录</td>
</tr>
<tr>
<td>mknod</td>
<td>创建索引节点</td>
</tr>
<tr>
<td>rmdir</td>
<td>删除目录</td>
</tr>
<tr>
<td>rename</td>
<td>文件改名</td>
</tr>
<tr>
<td>link</td>
<td>创建链接</td>
</tr>
<tr>
<td>symlink</td>
<td>创建符号链接</td>
</tr>
<tr>
<td>unlink</td>
<td>删除链接</td>
</tr>
<tr>
<td>readlink</td>
<td>读符号链接的值</td>
</tr>
<tr>
<td>mount</td>
<td>安装文件系统</td>
</tr>
<tr>
<td>umount</td>
<td>卸下文件系统</td>
</tr>
<tr>
<td>ustat</td>
<td>取文件系统信息</td>
</tr>
<tr>
<td>utime</td>
<td>改变文件的访问修改时间</td>
</tr>
<tr>
<td>utimes</td>
<td>参见utime</td>
</tr>
<tr>
<td>quotactl</td>
<td>控制磁盘配额</td>
</tr>
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