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Simulation and implementation of simple Shell under Linux Full code: https://github.com/JiaZhengJingXianSheng/Linux_Shell 1, fork Fork system call is used to create a new process, called a child process, which runs simultaneously with the process (called the process of system call fork). This process is called the parent process. After creat ...

main points Megahit introduction Basic assembly principle of Megahit Installation and use of Megahit Megahit actual combat hello, hello everyone. Today we bring you a super detailed installation and application tutorial about Megahit, a macro genome assembly tool. We will continue to bring you a series of articles on the analysis o ...

[quick reference manual of Linux common commands] pay attention to [entry station], and the background replies to "1001" for self access.lsof (list open files) is a tool to view the current system files. In the linux environment, everything exists in the form of files. Through files, you can access not only conventional data, but also ...

1, Foreword Through the previous study, we are familiar with capturing packets from the network card. Now we will learn how to process packets. WinPcap provides us with many API s to save packets flowing through the network to a heap file and read the contents of the heap. The format of this file is very simple, but it contains the binary cont ...

1. Threads 1. Definition Similar to a process, threads are a mechanism that allows applications to perform multiple tasks concurrently. ** A process can contain multiple threads. ** All threads in the same program execute the same program independently and share the same global memory area, including initialized, uninitialized, and hea ...

Nezha D1 runs Arch Linux RISC-V rootfs through TF Card Make Debian RISC-V TF startup card of RVBoards For details, please refer to here: "RVBoards Nezha" D1 Debian system image and installation methodAdd the pits that are not mentioned here according to The kernel cannot access and mount rootfs Introduction here [ 9.015501] ...

catalogue 1, awk 1. General 2. Working principle: 3.awk built in variables 4. Other built-in variables 2, Examples awk operation: Fuzzy matching: Comparison between numeric value and string: Logical operation & & and |: 3, Advanced usage of awk 1. Define reference variables 2. Conditional statements 4, Other examples ...

1, Account security 1. User information file / etc/passwd # Format: account:password:UID:GID:GECOS:directory:shell # User name: Password: user ID: group ID: user description: Home Directory: shell after login root:x:0:0:root:/root:/bin/bash # View logged in users: cat /etc/passwd | grep /bin/bash # View users with UID=0 awk -F: '$3==0{print ...

1, Equipment identification After the equipment is connected to the system, it exists in the form of files Equipment file name: SATA/SAS/USB /dev/sda,/dev/sdb #s means SATA or SAS or USB,; d is hard DISK; a represents the first block, b represents the second block /dev/sda1 express SATA The first partition of the first hard d ...

Compiling static file system testing tools can test your file system in QEMU environment without worrying about machine crash 🤭， For how to build a kernel development environment, please refer to the front article of the blogger: Running with VSCode + QEMU can visualize the Debug NOVA file system. Today is the static compilation of ...