Shulou(Shulou.com)06/03 Report--

1. Computer hierarchical structure

2. At the heart of every Unix, Linux, and BSD system is the kernel. The kernel is the core of all Unix and Linux,BSD systems

Keystroke-hardware transfers content to kernel-kernel- output to display-if executable-invokes processors, memory and other resources to perform tasks.

3. A wide range of versions

BSD 4.3 is a mix of proprietary AT&T Unix code, and continued use requires a license from AT&T, which was very expensive at the time, and several other organizations have separate network code

Interested, this part is completely independent of AT&T (AT&T reclaims UNIX code)

4. Agreed directory structure

The general rule configuration files are located in the / etc directory and system logs are stored in / var/log.

4. Important file directory

4. Common file system structure

EXT 2-4 Linux (version 4 is now in use, with many updates, mentioned separately in the file system structure section)

A file system built by JFS IBM on AIX

HFS+ Apple's file system on Unix-based MAC OS X, which is not supported by other operating systems but can be mounted as a readable linux file system

VxFS Veritas- is now mainly in HP HP-UX.

The file structure used by ZFS on SUN Solaris Linux and BSD systems also have limited support

4. Devices equipment

For example, / dev/mouse dev/cdrom and so on

Under some special / dev

4. The meaning of Shell user login interface

$

Normal user shell (may also be or > on some systems)

#

Root user shell

Nick@mylaptop:/var/log $

The type of Shell is bash by default under Redhat. When we write shell, the first line should state which kind of shell it is.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.