Linux notes One

1. Desktop environment: GNOME,KDE, etc.

2. Virtual Machine Network mode:

a.vmnet0: Virtual Switch B for virtual bridging networks. VMnet1:Virtual Switch for virtual host-onlynetwork c.vmnet8: Virtual Switch for virtual NAT network

Bridging mode: The host's physical network card and virtual machine's virtual network card are in the same position. A virtual machine is like another machine on the same network segment as the host. (When a virtual machine's network card is configured for bridge mode, it can communicate with the virtual machine as long as it is a networking device that can communicate with the host computer)

Host-only: A network isolated from the outside world, unable to access the Internet

Nat Mode: Access to the Internet

3.linux Disk Partitioning

A. Primary partition: Up to 4 partitions on one disk

B. Extended partition: The extended partition can be partitioned only if the primary partition is less than 4, and there can be at most one extended partition on a disk. The extended partition cannot hold any data, and the logical partition must be further partitioned in the extended partition, and the user data can only be saved in the logical partition.

C. Logical partitioning: Unlimited theoretical numbers

4. The hardware devices are mapped to the corresponding files in the/dev directory, and each disk partition in the/dev directory is mapped to a file in the following format:/dev/xxyn

XX: The device type that represents the disk on which the partition name resides

Y: Indicates that the partition's hard disk is the first device of the current interface

N: Indicates the ordinal of a partition, the first four partitions (primary or extended) are represented by 1~4, and the logical partitions start at 5

Linux notes One