Who developed Linux?
In August 1991, a student from Finland was at Linus Torvalds.
Today's Linux is not developed by Linus alone, but by hundreds of programmers around the world. What's interesting is that this huge worldwide development activity is not very coordinated. Of course, Linus sets the pace for the core, but Linux is more than just the core. There was no governing body; a Russian student got a new motherboard and wrote a driver to support it. A system administrator in Malan needed backup software, so he wrote one and passed it on to anyone who needed it. The right thing always seems to happen at the right time.
Recommended: "Linux Tutorial"
Related introduction:
1991 In August, Linus Benedict Torvalds, a young man from the University of Helsinki in Finland, released a new operating system. The origin of the matter is this: for internship, I used Minix (a set of UNIX operating systems with simple functions and easy to understand) developed by the famous computer scientist Andrew S. Tanenbaum. It can run on 8086 and later also supports 80386. In some PCs platform is very popular), Linus bought a 486 microcomputer, but he found that the functions of Minix were still imperfect, so he decided to write a protected mode operating system by himself, which was the prototype of Linux. Originally Linux was written in assembly language. The main job is to handle 80386 protected mode.
On October 5, 1991, Linus released the first "official" version of Linux: version 0.02. Now Linus
can run bash (a UNIX shell program of GNU), GCC (GNU's C compiler), it can do almost nothing, but it is designed as a hacker's operating system, and the main attention is focused on the core of the system development work, no one pays attention to user support, documentation work, version releases and other things.
The initial Linux version was placed on an FTP server for everyone to download freely. The administrator of the FTP server
thought it was Linus' Minix, so he created a Linux directory to store it. These files, the
name of Linux spread, and now it has become a conventional name.
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Maintenance mode is a special operating level entered in Linux systems through single-user mode or rescue mode, and is used for system maintenance and repair. 1. Enter maintenance mode and use the command "sudosystemctlisolaterscue.target". 2. In maintenance mode, you can check and repair the file system and use the command "fsck/dev/sda1". 3. Advanced usage includes resetting the root user password, mounting the file system in read and write mode and editing the password file.

Maintenance mode is used for system maintenance and repair, allowing administrators to work in a simplified environment. 1. System Repair: Repair corrupt file system and boot loader. 2. Password reset: reset the root user password. 3. Package management: Install, update or delete software packages. By modifying the GRUB configuration or entering maintenance mode with specific keys, you can safely exit after performing maintenance tasks.

Linux network configuration can be completed through the following steps: 1. Configure the network interface, use the ip command to temporarily set or edit the configuration file persistence settings. 2. Set up a static IP, suitable for devices that require a fixed IP. 3. Manage the firewall and use the iptables or firewalld tools to control network traffic.

Maintenance mode plays a key role in Linux system management, helping to repair, upgrade and configuration changes. 1. Enter maintenance mode. You can select it through the GRUB menu or use the command "sudosystemctlisolaterscue.target". 2. In maintenance mode, you can perform file system repair and system update operations. 3. Advanced usage includes tasks such as resetting the root password. 4. Common errors such as not being able to enter maintenance mode or mount the file system, can be fixed by checking the GRUB configuration and using the fsck command.

The timing and reasons for using Linux maintenance mode: 1) When the system starts up, 2) When performing major system updates or upgrades, 3) When performing file system maintenance. Maintenance mode provides a safe and controlled environment, ensuring operational safety and efficiency, reducing impact on users, and enhancing system security.

Indispensable commands in Linux include: 1.ls: list directory contents; 2.cd: change working directory; 3.mkdir: create a new directory; 4.rm: delete file or directory; 5.cp: copy file or directory; 6.mv: move or rename file or directory. These commands help users manage files and systems efficiently by interacting with the kernel.

In Linux, file and directory management uses ls, cd, mkdir, rm, cp, mv commands, and permission management uses chmod, chown, and chgrp commands. 1. File and directory management commands such as ls-l list detailed information, mkdir-p recursively create directories. 2. Permission management commands such as chmod755file set file permissions, chownuserfile changes file owner, and chgrpgroupfile changes file group. These commands are based on file system structure and user and group systems, and operate and control through system calls and metadata.

MaintenanceModeinLinuxisaspecialbootenvironmentforcriticalsystemmaintenancetasks.Itallowsadministratorstoperformtaskslikeresettingpasswords,repairingfilesystems,andrecoveringfrombootfailuresinaminimalenvironment.ToenterMaintenanceMode,interrupttheboo


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