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Linux 链接分两种，一种被称为硬链接（Hard Link），另一种被称为符号链接（Symbolic Link）。默认情况下，ln 命令产生硬链接。 硬连接 硬连接指通过索引节点来进行连接。在 Linux...

我们知道Linux的目录结构为树状结构，最顶级的目录为根目录...

Linux 系统是一种典型的多用户系统，不同的用户处于不同的地位，拥有不同的权限。 为了保护系统的安全性，Linux 系统对不同的用户访问同一文件（包括目录文件）的权限做了不同的规定。 在 Linux...

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linux启动时我们会看到许多启动信息。 Linux系统的启动过程并不是大家想象中的那么复杂，其过程可以分为5个阶段： 内核的引导。运行 init。系统初始化。建立终端 。用户登录系统。 init程序的类型： SysV: init,...

If you run a live or home server, moving files between local machines or two remote machines is a basic requirement. There are many ways to achieve that. In this article, we talk about scp (secure copy command) that encrypts the transferred file and password so no one can snoop....

Although there are already a lot of good security features built into Linux-based systems, one very important potential vulnerability can exist when local access is granted – – that is file permission based issues resulting from a user not assigning the correct permissions to files and...

At some point in your career as a Linux administrator, you are going to have to view log files. After all, they are there for one very important reason…to help you troubleshoot an issue. In fact, every seasoned administrator will immediately tell you that the first thing to be done, when a...

Back in the mid 90s and early 00s, Linux, being a fledgling operating system, suffered from a severe lack of useful applications. This issue was especially critical in the world of business ─ where Windows desktop applications could make or break productivity. To overcome this weakness, a...