What is linux s type file-Linux Operation and Maintenance-php.cn

Home

Operation and Maintenance

Linux Operation and Maintenance

What is linux s type file

青灯夜游

Mar 21, 2022 pm 03:40 PM

linuxsocket

In Linux, the s type file refers to the "socket file (socket)", which is a special file used for communication between processes; a network can be initialized through this file protocol, and then you can use a series of functions to initialize, transmit, etc. the network protocol.

What is linux s type file

#The operating environment of this tutorial: linux5.9.8 system, Dell G3 computer.

Linux file types (b, c, d, l, s, -)

##File TypeDescriptionbBlock devices are interface devices that provide system access to data, such as hard disks. cCharacter devices are interface devices for some serial ports, such as keyboards, mice, printers, and tty terminals. d Directory, similar to Windows folders. lsSocket file (socket), used for communication between processes. - Files are divided into plain text files (ASCII) and binary files (binary).





	Link file, similar to Windows shortcut.

Socket socket is a special file. You can initialize a network protocol through this socket, and then you can use it through a series of functions (write/read/ accept) to initialize, transmit, etc. this network protocol

socket definition

Socket is the middle software abstraction layer for communication between the application layer and the TCP/IP protocol family , which is a set of interfaces. In the design mode, Socket is actually a facade mode, which hides the complex TCP/IP protocol family behind the Socket interface. For users, a set of simple interfaces is all, allowing Socket to organize data to meet the specified requirements. Protocol

The structure of socket in the Linux kernel

The socket is actually a structure in the kernel. This structure contains members such as ip, port, state, size, etc. These members are used to initialize the detailed information of the socket, but we cannot use these members directly. Therefore, Linux provides corresponding interface functions for me to call. We use these functions to initialize the members in the socket structure

What is linux s type file

in the structure

ip, port: initialization IP address and port number
state: current network service status (monitoring/non-monitoring)
size: The maximum number of connections

Because we cannot directly operate these structure members, Linux provides corresponding interface functions for us to call and operate. These members

bind(): bind ip and port number
listen(): listen
.... etc. There are many other functions

Related recommendations: "

Linux Video Tutorial"

The above is the detailed content of What is linux s type file. For more information, please follow other related articles on the PHP Chinese website!

Statement

The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Linux Operations: System Administration and MaintenanceApr 15, 2025 am 12:10 AM

The key steps in Linux system management and maintenance include: 1) Master the basic knowledge, such as file system structure and user management; 2) Carry out system monitoring and resource management, use top, htop and other tools; 3) Use system logs to troubleshoot, use journalctl and other tools; 4) Write automated scripts and task scheduling, use cron tools; 5) implement security management and protection, configure firewalls through iptables; 6) Carry out performance optimization and best practices, adjust kernel parameters and develop good habits.

Understanding Linux's Maintenance Mode: The EssentialsApr 14, 2025 am 12:04 AM

Linux maintenance mode is entered by adding init=/bin/bash or single parameters at startup. 1. Enter maintenance mode: Edit the GRUB menu and add startup parameters. 2. Remount the file system to read and write mode: mount-oremount,rw/. 3. Repair the file system: Use the fsck command, such as fsck/dev/sda1. 4. Back up the data and operate with caution to avoid data loss.

How Debian improves Hadoop data processing speedApr 13, 2025 am 11:54 AM

This article discusses how to improve Hadoop data processing efficiency on Debian systems. Optimization strategies cover hardware upgrades, operating system parameter adjustments, Hadoop configuration modifications, and the use of efficient algorithms and tools. 1. Hardware resource strengthening ensures that all nodes have consistent hardware configurations, especially paying attention to CPU, memory and network equipment performance. Choosing high-performance hardware components is essential to improve overall processing speed. 2. Operating system tunes file descriptors and network connections: Modify the /etc/security/limits.conf file to increase the upper limit of file descriptors and network connections allowed to be opened at the same time by the system. JVM parameter adjustment: Adjust in hadoop-env.sh file

How to learn Debian syslogApr 13, 2025 am 11:51 AM

This guide will guide you to learn how to use Syslog in Debian systems. Syslog is a key service in Linux systems for logging system and application log messages. It helps administrators monitor and analyze system activity to quickly identify and resolve problems. 1. Basic knowledge of Syslog The core functions of Syslog include: centrally collecting and managing log messages; supporting multiple log output formats and target locations (such as files or networks); providing real-time log viewing and filtering functions. 2. Install and configure Syslog (using Rsyslog) The Debian system uses Rsyslog by default. You can install it with the following command: sudoaptupdatesud

How to choose Hadoop version in DebianApr 13, 2025 am 11:48 AM

When choosing a Hadoop version suitable for Debian system, the following key factors need to be considered: 1. Stability and long-term support: For users who pursue stability and security, it is recommended to choose a Debian stable version, such as Debian11 (Bullseye). This version has been fully tested and has a support cycle of up to five years, which can ensure the stable operation of the system. 2. Package update speed: If you need to use the latest Hadoop features and features, you can consider Debian's unstable version (Sid). However, it should be noted that unstable versions may have compatibility issues and stability risks. 3. Community support and resources: Debian has huge community support, which can provide rich documentation and

TigerVNC share file method on DebianApr 13, 2025 am 11:45 AM

This article describes how to use TigerVNC to share files on Debian systems. You need to install the TigerVNC server first and then configure it. 1. Install the TigerVNC server and open the terminal. Update the software package list: sudoaptupdate to install TigerVNC server: sudoaptinstalltigervnc-standalone-servertigervnc-common 2. Configure TigerVNC server to set VNC server password: vncpasswd Start VNC server: vncserver:1-localhostno

Debian mail server firewall configuration tipsApr 13, 2025 am 11:42 AM

Configuring a Debian mail server's firewall is an important step in ensuring server security. The following are several commonly used firewall configuration methods, including the use of iptables and firewalld. Use iptables to configure firewall to install iptables (if not already installed): sudoapt-getupdatesudoapt-getinstalliptablesView current iptables rules: sudoiptables-L configuration

Debian mail server SSL certificate installation methodApr 13, 2025 am 11:39 AM

The steps to install an SSL certificate on the Debian mail server are as follows: 1. Install the OpenSSL toolkit First, make sure that the OpenSSL toolkit is already installed on your system. If not installed, you can use the following command to install: sudoapt-getupdatesudoapt-getinstallopenssl2. Generate private key and certificate request Next, use OpenSSL to generate a 2048-bit RSA private key and a certificate request (CSR): openss

See all articles