Reading notes-brother Bird's Linux

2. The core of the operating system, called Kernel, is the lowest-level, responsible for hardware-controlled things.
4. How to learn Linux
1. Linux uses, servers, embedded systems, because the core of Linux is very streamlined and can even reach the level of hundreds of K.
2. Some advice from Brother Bird:
1. Understand the concepts of basic knowledge, permissions, users, groups, etc.
2. Learn a text editor, such as VI
3. Learn the shell and understand the shell scripts
4. Network fundamentals, the concept of IP, the concept of routing, TCP/IP.
6. Linux hardware configuration
2. In Linux, every hardware is treated as a file. Almost all of the hardware is in the dev/directory.
1. For example: The file name of the hard disk is/dev/hd[a-d], optical drive/dev/cdrom
4. About IP. In fact, inside the school, our IP should be the internal private IP, which needs to be connected with the external via the IP-sharing device. These are the so-called NAT (Network address translation) features. We can use the NAT technology, the internal computing level of data packets, IP set to the NAT host public IP. It is then passed to the outside network.
6. Partitioning of Linux systems: There are several main directories:
1. /: Required, root directory
2. /USER: The operating system is placed in this directory
3. /home: User's information
4. /var: Log all of the default server's login files, mail,www the server's default path
5. /swap: Virtual Memory
8. Disk partitioning for Linux systems
1. The principle of hard disk, hard disk is to sectors (sector), cylinder (magnetic column), partitions (partition slot) as a storage unit, the bottom of the physical hard disk unit is sectors, a sector is probably about a byte.   When you format a disk, you typically format several sectors as a logical block (logical sector), often called a block. Using blocks combination of hard disk computing units, cylinder. Split into different partitions,partitions divided into primary and extended,extended can be programmed into multiple logical zones, in fact, this is the partitioning principle of Windows, several primary partitions, and then, The extended partition can also be divided into several logical partitions. (In fact, using a disk partition table, partition table This thing to a piece of physical hard disk segmentation).
2. In fact, this disk partitioning work can be done with some of the installed tools with the software, of course, when installing the system, you will also be asked to partition the disk.

        
                         

Reading notes-brother Bird's Linux