shell介绍
在计算机科学中，shell 是一种用户界面，用于与操作系统交互。它通常是一个命令行界面（CLI），允许用户通过输入文本命令来执行任务，比如运行程序、管理文件或配置系统。Shell 的名称来源于它像“壳”一样包裹着操作系统内核，提供了一个与内核沟通的桥梁。
常见Shell 类型
Bourne Shell (sh)
- Unix中最古老的shell之一，由Stephen Bourne开发。
- 简单但功能有限，很多现代shell都基于它。
Bash (Bourne Again Shell)
- 最流行的Linux shell，是Bourne Shell的增强版。
- 支持脚本编写、命令历史、自动补全等功能。
Zsh
- 一个功能强大的现代shell，扩展了Bash的功能。
- 提供更好的自定义选项和插件支持，比如Oh My Zsh。
Fish (Friendly Interactive Shell)
- 以用户友好著称，默认提供语法高亮和智能建议。
PowerShell
- 微软开发的shell，主要用于Windows，但也支持跨平台。
- 面向对象，适合系统管理和自动化。
fluent-bit介绍
Fluent Bit 是一个开源的、高性能的日志处理器和转发器，专为嵌入式系统、物联网设备和云原生环境设计。它由 Treasure Data 开发，现由 CNCF（云原生计算基金会）托管，与 Fluentd 同属一个生态系统，但相比 Fluentd，Fluent Bit 更轻量，资源占用更低，适用于资源受限的场景。
fluent-bit
ubuntu包解压异常(dpkg: error processing)
...
Unpacking linux-headers-6.8.0-56 (6.8.0-56.58) ...
dpkg-deb (subprocess): decompressing archive '/var/cache/apt/archives/linux-headers-6.8.0-56_6.8.0-56.58_all.deb' (size=13837808) member 'data.tar': zstd error: Data corruption detected
dpkg-deb: error: <decompress> subprocess returned error exit status 2
...
env
- ubuntu-24.04.2 LTS (Noble Numbat)
Fedora Media Writer写iso软件
fedora workstation体验
Fedora Workstation Live 42 Beta 于 2025 年 3 月 18 日发布，目前仍处于测试阶段，因此安装过程中可能会遇到一些小问题，但整体体验已经非常接近最终版本。
env
- virtualbox-v7.1.6
- Fedora-Workstation-Live-x86_64-42_Beta-1.4.iso
ubuntu之dpkg命令
在 Ubuntu 或其他基于 Debian 的系统中，**dpkg 是一个底层的包管理工具，用于处理 .deb 包**的安装、卸载、查询等操作。
dpkg help
root@vgt-ubuntu-10:~# dpkg --help
Usage: dpkg [<option>...] <command>
Commands:
-i|--install <.deb file name>... | -R|--recursive <directory>... ### 安装
--unpack <.deb file name>... | -R|--recursive <directory>...
-A|--record-avail <.deb file name>... | -R|--recursive <directory>...
--configure <package>... | -a|--pending
--triggers-only <package>... | -a|--pending
-r|--remove <package>... | -a|--pending ### 移除
-P|--purge <package>... | -a|--pending ### 移除包及配置
-V|--verify [<package>...] Verify the integrity of package(s).
--get-selections [<pattern>...] Get list of selections to stdout.
--set-selections Set package selections from stdin.
--clear-selections Deselect every non-essential package.
--update-avail [<Packages-file>] Replace available packages info.
--merge-avail [<Packages-file>] Merge with info from file.
--clear-avail Erase existing available info.
--forget-old-unavail Forget uninstalled unavailable pkgs.
-s|--status [<package>...] Display package status details.
-p|--print-avail [<package>...] Display available version details.
-L|--listfiles <package>... List files 'owned' by package(s). ### 列出包内文件
-l|--list [<pattern>...] List packages concisely.
-S|--search <pattern>... Find package(s) owning file(s).
-C|--audit [<package>...] Check for broken package(s).
--yet-to-unpack Print packages selected for installation.
--predep-package Print pre-dependencies to unpack.
--add-architecture <arch> Add <arch> to the list of architectures.
--remove-architecture <arch> Remove <arch> from the list of architectures.
--print-architecture Print dpkg architecture.
--print-foreign-architectures Print allowed foreign architectures.
--assert-help Show help on assertions.
--assert-<feature> Assert support for the specified feature.
--validate-<thing> <string> Validate a <thing>'s <string>.
--compare-versions <a> <op> <b> Compare version numbers - see below.
--force-help Show help on forcing.
-Dh|--debug=help Show help on debugging.
-?, --help Show this help message.
--version Show the version.
Validatable things: pkgname, archname, trigname, version.
Use dpkg with -b, --build, -c, --contents, -e, --control, -I, --info,
-f, --field, -x, --extract, -X, --vextract, --ctrl-tarfile, --fsys-tarfile
on archives (type dpkg-deb --help).
Options:
--admindir=<directory> Use <directory> instead of /var/lib/dpkg.
--root=<directory> Install on a different root directory.
--instdir=<directory> Change installation dir without changing admin dir.
--pre-invoke=<command> Set a pre-invoke hook.
--post-invoke=<command> Set a post-invoke hook.
--path-exclude=<pattern> Do not install paths which match a shell pattern.
--path-include=<pattern> Re-include a pattern after a previous exclusion.
-O|--selected-only Skip packages not selected for install/upgrade.
-E|--skip-same-version Skip packages whose same version is installed.
-G|--refuse-downgrade Skip packages with earlier version than installed.
-B|--auto-deconfigure Install even if it would break some other package.
--[no-]triggers Skip or force consequential trigger processing.
--verify-format=<format> Verify output format (supported: 'rpm').
--no-pager Disables the use of any pager.
--no-debsig Do not try to verify package signatures.
--no-act|--dry-run|--simulate
Just say what we would do - don't do it.
-D|--debug=<octal> Enable debugging (see -Dhelp or --debug=help).
--status-fd <n> Send status change updates to file descriptor <n>.
--status-logger=<command> Send status change updates to <command>'s stdin.
--log=<filename> Log status changes and actions to <filename>.
--ignore-depends=<package>[,...]
Ignore dependencies involving <package>.
--force-<thing>[,...] Override problems (see --force-help).
--no-force-<thing>[,...] Stop when problems encountered.
--refuse-<thing>[,...] Ditto.
--abort-after <n> Abort after encountering <n> errors.
--robot Use machine-readable output on some commands.
Comparison operators for --compare-versions are:
lt le eq ne ge gt (treat empty version as earlier than any version);
lt-nl le-nl ge-nl gt-nl (treat empty version as later than any version);
< << <= = >= >> > (only for compatibility with control file syntax).
Use 'apt' or 'aptitude' for user-friendly package management.