Unix network IO model
Pre-knowledge file descriptors A file descriptor (fd for short) is formally a non-negative integer. In fact, it is an index value that points to the...
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Tag: unix
Unix Signaling Mechanisms (1)
February 5, 2024
by Mehul Rama
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Allows a process or kernel process to interrupt other processes. System Call changed. Using these System Call processes, the System Call process can choose one...
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FreeBSD 13.0 is available for download
February 5, 2024
by Shayak Krishnan
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Please visit the original link: https://sysin.org/article/freebsd-13/, view the latest version. Original works, reproduced please retain the source. According to the official release schedule of FreeBSD...
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FreeBSD12 DWM + ST installation
February 5, 2024
by 李馨儀
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Sudo does not exist in FreeBSD, so you need to install sudo as root. The user name is the user name you set yourself, just...
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The father of Unix – a Being from god’s perspective
February 5, 2024
by Keith Lopez
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We all know that if a man can be called the father of something, there must be something special about him. This is especially true...
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Introduction to the five IO models of UNIX
February 5, 2024
by Keith Johns
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Socket blocking vs. non-blocking, synchronous vs. asynchronous Synchronous/asynchronous is mainly for THE C-side - synchronization is like a normal page, after the page sends a...
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Three complementary ways to view the man page
February 5, 2024
by Katie Washington
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In order to enjoy the computer world, mastering some common unix commands is a must. The UNIX online
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Check port usage in Mac
February 5, 2024
by Madison Johnson
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In back-end development, sometimes the service cannot start properly and the port is occupied. Check the port usage. Some Linux commands are needed.
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What is `#! ` and its usage
February 5, 2024
by 李家瑋
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What is #! #! is called shebang when it's at the beginning of first line of a line. When a text file
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Unix programming and Xv6 system on (5) process control
February 5, 2024
by Luke Blackwell
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Each process has a unique representation of the PID, which is unique but reusable. The process with ID 0 is usually a scheduler process, which...
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Unix find file command
February 5, 2024
by Taimur Chandra
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Archived Articles looked for a file in Unix, but forgot the path of the file, so it found a solution on the web. Find the...
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Unix Network Programming Volume 1 Chapter 6 I/O
February 5, 2024
by Miranda Chen
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In Section 5.12, we saw that the TCP client processes two inputs simultaneously: the standard input and the TCP socket. The problem we had was...
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What’s the difference between `whereis` and `which`
February 5, 2024
by Aidan Reardon
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There are two familar commands to return the command path: whereis and which. But sometimes the resu
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UNIX Advanced Environment Programming APUE- Mei – Stevens – Posts and Telecommunications Press
February 5, 2024
by Leslie Robertson
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POSIX is all Unix - like system needs to follow the specification, it defines the operating system, need to provide the interface's official website (https://pubs.opengroup.org/onlinepubs/9699919799/),...
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Bat – “Cloned cat with Wings”
February 5, 2024
by Guy Jones-James
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Bat is a cat clone that supports syntax highlighting and Git integration. Is used to replace cat and enhanced cat commands.
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Unix programming and Xv6 system on (4) process environment
February 5, 2024
by Craig Monk
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Call a special startup routine before main. The executable file specifies this startup routine as the starting address of the program, which takes command line...
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Unix programming and Xv6 system on (3) standard I/O library
February 5, 2024
by Melissa Pratt
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After opening a stream, a pointer to the FILE object is returned, usually including the FILE descriptor, a pointer to the stream buffer, the length...
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Unix programming and Xv6 system on (2) files and directories
February 5, 2024
by Leanne Cooksley
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2. Files and directories Note that when a new file is created, the system will create a mask word based on the current file mode...
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POSIX Thread
January 31, 2024
by Tessa McIntyre
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In the traditional Unix model, when a process needs another entity to complete a task, it forks a child process, such as in a network...
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History of UNIX (BSD,GNU, Linux)
January 29, 2024
by Alex Hall
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Since Ken ThompsonKen Thompson and Dennis RitchieDennis Ritchie developed the prototype of UNIX system in Bell Telephone Laboratories in the United States in 1969, It...
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Unix is about to turn 50
January 20, 2024
by 楊婷婷
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Unix time (also known as epoch Time) is the number of seconds that have passed since January 1, 1970. As Unix approaches its 50th birthday,...
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This article will help you play with C on Unix
January 7, 2024
by Ms. Sheila Price
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A shell is a special application (command line interpreter) that provides an interface to run other applications. Each process has a working directory (also known...
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Alternatives to Unix commands
December 19, 2023
by Judith Smith-Potter
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This is the fourth day of my participation in the August More text Challenge. For details, see: August More Text Challenge. Good Unix command substitution...
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Unix kernel source code analysis [11. Pipeline]
December 14, 2023
by Ishaan Vyas
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A pipeline is a mechanism for communication between parent and child processes because processes have separate virtual address Spaces, so no process can directly access...
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Assembly language reading notes [interrupt]
December 14, 2023
by Rachael Cole
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Any general-purpose CPU can detect a special message sent from outside the CPU or generated internally after executing the currently executing instruction, and can immediately...
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The PDP – 11 architecture
December 14, 2023
by Linda Newman
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ISA, Instruction Set Architecture, DEC, Digital Equipment Corporation, Central Processing Units, Microprocessor, Minicomputer, PC, Program Counter, SP, Stack Pointer, PSW, A) processor status word B)...
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Assembly language reading notes [special register]
December 14, 2023
by Aarush Rao
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In the internal registers of the CPU, there is a special register, which has the following three functions :(1) to store some execution results of...
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Advanced UNIX programming notes
December 14, 2023
by Kiara Manda
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When the kernel starts a C program, the main function is preceded by a call to the startup routine, which does some processing before calling...
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Insight: Read about the evolution of Unix time-sharing systems
December 14, 2023
by Jayesh Lalla
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The Evolution of The UNIX Time-Sharing System -- Dannis M. Ritchie
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The most simple and popular Vagrant installation instructions for 2019, with a sample Vagrantfile
December 14, 2023
by 何宗翰
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We have a sample demo in this article. Please be patient and check it out at the bottom of the article. We hope you have...
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