Software Package Repositories EPOL Image EUR/oepkgs/... Desktop/SDS/ DB/Big data/... kernel/glibc/ system/GCC/... Core/Base package repository Software package repository of the openEuler LTS and innovation community developers. Third-party package repository (open/closed source) Software repository and build system provided by the openEuler community or third-party systems. Software packages in this repository Projects Community-certified openEuler Distributions ( Sorted by certification time ) Partner System xFusion Digital Technologies Co., Ltd. FusionOS 22 UnionTech Software Technology Co., Ltd. UOS

Introduction openEuler 21.09 Technical White Paper 02 openEuler has evolved from a simple server operating system (OS) into a digital infrastructure OS that fits into any server, cloud computing, edge computing 09 Technical White Paper 04 02/ Platform Architecture openEuler 21.09 Technical White Paper 05 System Framework openEuler is an innovative open source OS platform built on kernel innovations and a solid online services to run reliably based on their higher service priorities. • EulerFS: A new file system is designed for non-volatile dual in-line memory modules (NVDIMMs). It uses technologies such as

Technical White Paper System Framework openEuler is used mainly for servers. It consists of the basic acceleration library, virtualization, kernel, driver, compiler, system tool, OpenJDK, and other expansion etMem: unified management of various memory and storage media, and smooth expansion of system capacity • Live kernel upgrade: quick, hitless fixes of kernel vulnerabilities Cloud base: • StratoVirt iSula Compilers Apps Desktops UKUI/DDE/Xfce DB Web Resource orchestration Messaging middleware Live kernel upgrade File systems Chips and peripheral drivers Linux Kernel 5.10 Computing architecture

等新的硬件特性。openEuler 提供 EMR 平台的支持，对关键应用以及客 户计算平台的持续升级至关重要。 • 支持 ACPI for Arm64 MPAM 2.0：MPAM（Memory system component Partioning and Monitoring）是 Arm Architecture v8.4 的 Extension 特性。用于解决服务器系统中，混部不同类型业务 RPM 系统，SysCare 构建出的热补丁依赖关系完整，热补丁分发、安装、更新与卸载流程均无需进行 特殊处理，可直接集成放入软件仓 repo。 功能描述 builder cli build system kpatch upatch kernel module build life-cycle management patch management package management 指标日志 运维命令 零拷贝 分布式TCP hash表 32 openEuler 22.03 LTS SP2 技术白皮书 特性增强 ROS 组件支持 ROS（Robot Operating System）是一组软件库和工具，可帮助开发者构建机器人应用程序。从驱动程序到算法，开发工具， ROS 把原本松散的零部件耦合在了一起，为开发者们提供了通信架构。ROS 虽然叫做操作系统，但并非传统意义的操作系统，

Container Kata iSulad Container StratoVirt secGear Framework 17 secGear Service Layer secGear Middleware Layer secGear Base Layer Intel SGX RISC-V Keystone ARM TrustZone secGear Enclave Unified

14:53:01 UTC) is intended to provide a broad overview of the Debian system as a post-installation user’s guide. It covers many aspects of system administration through shell-command examples for non- developers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1.5 GUI system administration tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1.8 How to shutdown the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.1.9 Recovering

. . . . . . . . . . . . . . . . . . . . . 13 3.3.3.1 Testing hardware compatibility with a Live-System . . . . . . . . . . . . . 14 3.3.4 網路設置 . . . . . . . . . . . . . . . . . . . . . . . . . . . . automated install . . . . . . . . . . . . . . . . . . . . . 30 5.2.10 Accessibility of the installed system . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 5.3 開機參數 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 6.3.8.1 Setting the System Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 6.3.8.2 Reboot the System . . . . . . . . . . . . . . . . . . . . . . . . .

............................................................................... 15 Querying the System Image Version .................................................................................. ............................................................................. 18 Installing the System Image .......................................................................................... ........................................................................................ 52 6. System Installation and Update ........................................................................

around in the command line man pages Counting files in a directory Editing longer commands File system FHS Useful commands Creating soft link to a file Creating hard links Extracting a tar file Creating What is a service? What is a daemon? What is the init system? Units in systemd .service units in systemd How to find all the systemd units in the system? Working with a particular service Enabling or disabling disabling a service Shutdown or reboot the system using systemctl journalctl Finding the logs of a service To view only the last N entries Continuous stream of logs Listing of previous boots Time-based log

commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2 File system 11 2.1 FHS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 8.3 What is the init system? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 8.4 Units . . . . . . . . . . . . . . . . . . . . . . . . 46 8.6 How to find all the systemd units in the system? . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46 8.7 Working with a particular service