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Experimental report of City College of Zhejiang University File download: https://download.csdn.net/download/OwemShu/83598798 1, Experimental purpose 1. Master the configuration method of static route; 2. Understand the function and principle of routing table. 2, Experimental equipment Cisco router 2911; PC. Routing module, serial port l ...

What is DHCP: DHCP (Dynamic Host Configuration Protocol) is a LAN network protocol. It refers to a range of IP addresses controlled by the server. When the client logs in to the server, it can automatically obtain the IP address and subnet mask assigned by the server. DHCP has three mechanisms for assigning IP addresses: Automatic Allocation ...

Add fixed IP to Ubuntu instance of multipass Multipass is a VM software discovered the day before yesterday. It is similar to Docker, but it feels that the instructions are relatively simple to use. The startup speed is much faster than Vmware, so Vmware, which has been used for many years, is abandoned. Recently, I found that many things, if ...

1, Install Ubuntu 20 on raspberry pie 4B 04 Preparation of raspberry pie 1. Download ubuntu version installation package You can find it on the official website of ubuntu 2. Format the SD card with DiskGenius, delete all sectors, and then format. 3. Write to SD card Download the official burning tool, connect the SD card to the com ...

   this article only deals with the simple use of the above software, which is strongly personal. For more comprehensive and detailed use, please refer to the official website.   1, What's good about the new software 1. cat,less =>bat    the commonly used cat command is used to connect multiple files and print to ...

1. Preface Kernel version: linux 4.9.225. Take freescale as an example. (some contents need to be modified and supplemented, which may not be accurate) 2. General In the previous article, the controller driver uses the connection mode of platform bus. In this section, the PHY device driver is based on the connection mode of device, d ...

1. Zombie process 1.1 definition of zombie process: The parent process creates a child process, and the parent process ends before the child process. If the resources of the child process are not released, it will become a zombie process and continue to occupy system resources 1.2 solutions to zombie process Before ending, the child proce ...

1, Brief description Syzkaller is a kernel fuzzy testing tool developed by Google. In short, it automatically inputs various effective, invalid and completely randomized parameter data to the kernel, and observes the operation status of the kernel, whether there are panic, memory leakage and other problems, so as to discover the vulnerabilitie ...

Judge by document type Test options Test optionseffect-bJudge whether the file exists and whether it is a block device file (yes, the block device file is true)-cJudge whether the file exists and whether it is a character device file.-dJudge whether the file exists and whether it is used as a directory file.-eDetermine whether the file ex ...

Message queue Pipes and shared memory: byte stream data Message: datagram (type + data) Queues: priority queues You can specify the type to read. Under the same type, it is in the order of first in first out Operation of message queue: 1. Create and access a message queue #include <sys/types.h> #include <sys/ipc.h> #include <s ...