Linux Distribution(distro)
A Linux distro is not just the Linux kernel—-itś a complete operation system built on top of the kernel.
A distro packages the kernel with system tools, desktop environments, libraries, and applications.
Most distributions are derived from the following ¨ancestors¨
| base | representative distros | package management | features |
|---|---|---|---|
| Debian | Debian, Ubuntu, Linux Mint | .deb (APT) | 稳定、社区驱动、软件包极多 |
| Red Hat | RHEL, CentOS Stream, Fedora | .rpm (DNF/YUM) | 企业级、服务器常用 |
| Arch | Arch Linux, Manjaro, EndeavourOS | pacman | 滚动更新、极简、自主配置 |
| Slackware | Slackware | pkgtool | 最古老、极简、几乎无自动化 |
| Gentoo | Gentoo | portage | 源码编译、可高度定制 |
| 独立系 | NixOS, Alpine, Void | 各自独立 | 特殊理念或轻量化 |
Linux distro includes
1. Core Layer: Linux Kernel
The kernel is the heart of the system. It manages:
- Processes – CPU scheduling and multitasking
- Memory – Allocation and virtual memory
- Hardware – Drivers for GPU, network, storage, etc.
- File systems – Ext4, Btrfs, XFS, etc.
Kernel versions differ: Debian stable uses LTS kernels, Arch tracks the latest stable kernel.
2. GNU Userland Tools
These provide the basic command-line environment:
- Shell:
bash.zsh - COre commands:
ls,cp.mv,grep,find,tar,sed,awk - Libraries: GNU C Library(glibc)或musl
3. Package Manager
The package Manager is the soul of the distro—-it handles software installation, updates, and dependencies
- Debian-based: APT/dpkg(
.deb) - Red Hat-based: DNF/YUM(
.rpm) - Arch-based: pacman(
.pkg.tar.zst) - Gentoo: Portage(source-based)
It typically connects to software repositories, making it easy to install or update applications.
4. Init System
The init system starts system processes and services after boot:
systemd(most modern distros like Ubuntu, Fedora, Arch)SysVinit(older Debian releases)runit/OpenRC(Void, Alpine, Gentoo options)
5. Desktop Environment(optional)
For desktop distro:
- Common DEs: GNOME, KDE Plasma, XFCE, Cinnamon, MATE, LXQt
- Some distros may only include a window manager like i3wm or Openbox
- Server distros often have no GUI, just CLI
6. Base Applications
Default applications often include:
- Terminal emulator:
gnome-terminal,konsole,xterm - Text editors:
nano,vim,gedit - File manager:
Nautilus,Dolphin - Browser:
Firefox,Chromium - Networking tools:
NetworkManager,wget,curl - Software installer GUI: GNUMO Software, Discover
7. System Services / Daemons
Examples:
- Networking: NetworkManager, systemd-networkd
- Printing: CUPS
- Audio: PulseAudio, PipeWire
- Time sync: systemd-timesyncd, ntpd
- Security: SELinux(Fedora/RHEL), AppArmor(Ubuntu)
8. Installer & Setup Tools
- Graphical or CLI installers(Ubiquity, Calamares, Anaconada)
- User management utilities
- Partitioning tools(parted, gparted)
Key Differences Between Distros
- Package manager & repositories - APT vs pacman vs DNF
- Default desktop environment - GNOME vs KDE vs XFCE
- Update strategy - fixed release vs rolling release
- Stability vs cutting-edge software - Debian Stable vs Arch
- Security & system libraries - SELinux, AppArmor, musl libc
Ubuntu
定位与哲学
- 面向大众用户，强调开箱即用
- 有完整的桌面环境(GNOME/KDE），驱动、常用软件、更新机制都预先配置好
- 它的哲学是“让Linux普及化”，哪怕用户完全不懂命令行，也能用
安装过程
有图形化安装器（Ubiquity/Subiquity），选语言 -> 分区 -> 用户 -> 安装 -> 完成，适合新手
装完后就是一个能用的桌面系统，日常办公娱乐都没问题
软件包管理
用APT（Advanced Package Tool）管理软件包，基于.deb包
官方仓库很稳定，但软件版本相对较旧（稳定优先）
也支持Snap、Flatpak等新型打包方式
更新机制
有长期支持版（LTS,5年支持）；也有短期版（9个月）
更新以“稳定”为主，版本更新不快
适合追求稳定的工作环境
Arch
定位与哲学
- 面向有经验的用户，强调KISS原则（Keep It Simple, Stupid）
- 不预装桌面环境，没有多余的东西，从最小系统开始，让你自己组装成想要的样子
- 哲学是“自由和极简”，一切都让用户自己决定
安装过程
完全命令行安装，给你一个shell,剩下的全靠自己：手动分区、挂载、安装引导、安装桌面环境
安装过程本身就是学习Linux的一种训练
软件包管理
用pacman管理软件包，基于.pkg.tar.zst包
官方仓库软件非常新，几乎是“滚动更新”（最新内核、最新桌面环境）
拥有AUR（Arch User Respository），社区贡献的海量软件脚本，几乎能找到一切
更新机制
滚动更新，一直是最新版本，不存在“大版本升级”
更新速度快，但有时可能会引入不兼容问题
适合喜欢折腾、保持系统最新的用户