Some versions of the ls tool have the -c option, which sorts by the time of file modification, showing the most recently modified files first.
有些版本的ls工具具有- c选项，它可以按照文件修改的时间进行排序，最先显示最后修改的文件。
Sure, you could just do a simple ls or dir, but most folks that don't spend time organizing their site's physical layout also don't take the time to take precautionary steps like that.
当然，您可以只执行一个简单的ls或dir，但大多数不花时间组织其站点物理布局的人也不会花时间来采用这样的预防步骤。
The example shown for step 3 (see Listing 3) makes the first-time remote SSH call (ls -d /tmp) to the destination server, thereby caching the key within your server's .ssh/known_hosts file.
步骤 3 中所示的示例（参见 清单 3）发出第一次远程 SSH 调用（ls -d /tmp）到目标服务器，从而缓存您的服务器的 .ssh/known_hosts 文件内的密钥。
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