A Activity diagram used in UML 6/9 and SysML B Bachman diagram Booch used in software engineering Block diagram Block Definition Diagram BDD used in SysML C Carroll diagram Cartogram Catalytic cycle Chemical equation Curly arrow diagram Category theory diagrams Cause-and-effect diagram Chord diagram Circuit diagram Class diagram from UML 1/9 Collaboration diagram from UML 2.0 Communication diagram from UML 2.0 Commutative diagram Comparison diagram Component diagram from UML 3/9 Composite structure diagram from UML 2.0 Concept map Constellation diagram Context diagram Control flow diagram Contour diagram Cordier diagram Cross functional flowchart D Data model diagram Data flow diagram Data structure diagram Dendrogram Dependency diagram Deployment diagram from UML 9/9 Dot and cross diagram Double bubble map used in education Drakon-chart E Entity-Relationship diagram ERD Event-driven process chain Euler diagram Eye diagram a diagram of a received telecommunications signal Express-G Extended Functional Flow Block Diagram EFFBD F Family tree Feynman diagram Flow chart Flow process chart Flow diagram Fusion diagram Free body diagram G Gantt chart shows the timing of tasks or activities used in project management Grotrian diagram Goodman diagram shows the fatigue data example: for a wind turbine blades H Hasse diagram HIPO diagram I Internal Block Diagram IBD used in SysML IDEF0 IDEF1 entity relations Interaction overview diagram from UML Ishikawa diagram J Jackson diagram K Karnaugh map Kinematic diagram L Ladder diagram Line of balance Link grammar diagram M Martin ERD Message Sequence Chart Mind map used for learning, brainstorming, memory, visual thinking and problem solving Minkowski spacetime diagram Molecular orbital diagram N N2 Nassi Shneiderman diagram or structogram a representation for structured programming Nomogram Network diagram O Object diagram from UML 2/9 Organigram Onion diagram also known as "stacked Venn diagram" P Package diagram from UML 4/9 and SysML Parametric diagram from SysML PERT Petri net shows the structure of a distributed system as a directed bipartite graph with annotations Phylogenetic tree - represents a phylogeny evolutionary relationships among groups of organisms Piping and instrumentation diagram P&ID Phase diagram used to present solid/liquid/gas information Plant Diagram Pressure volume diagram used to analyse engines Pourbaix diagram Process flow diagram or PFD used in chemical engineering Program structure diagram R Radar chart Radial Diagram Requirement Diagram Used in SysML Rich Picture R-diagram Routing diagram S Sankey diagram represents material, energy or cost flows with quantity proportional arrows in a process network. Sentence diagram represents the grammatical structure of a natural language sentence. Sequence diagram from UML 8/9 and SysML SDL/GR diagram Specification and Description Language. SDL is a formal language used in computer science. Smith chart Spider chart Spray diagram SSADM Structured Systems Analysis and Design Methodology used in software engineering Star chart/Celestial sphere State diagram are used for state machines in software engineering from UML 7/9 Swim lane Syntax diagram used in software engineering to represent a context-free grammar Systems Biology Graphical Notation a graphical notation used in diagrams of biochemical and cellular processes studied in Systems biology System context diagram System structure Systematic layout planning T Timing Diagram: Digital Timing Diagram Timing Diagram: UML 2.0 TQM Diagram Treemap U UML diagram Unified Modeling Language used in software engineering Use case diagram from UML 5/9 and SysML V Value Stream Mapping Venn diagram Voronoi diagram W Warnier-Orr Williot diagram Y Yourdon-Coad see Edward Yourdon, used in software engineering
文章浏览阅读10w 次，点赞200次，收藏874次。 本文详细介绍了Linux系统中cd命令的使用方法，包括切换到指定目录、根目录、家目录等常见操作，以及如何返回上一层目录。 适用于Linux初学者和需要复习cd命令用法的用户。
超详细的linux cd（change directory）命令，快看过来，收藏起来。 cd是 Linux 中最常用的命令之一，用于切换当前工作目录。 1. 基本用法1.1 切换到指定目录cd path to directory 示例：cd home user documents …
Linux cd 命令 Linux 命令大全 Linux cd（英文全拼：change directory）命令用于改变当前工作目录的命令，切换到指定的路径。 若目录名称省略，则变换至使用者的 home 目录 (也就是刚 login 时所在的目录)。 另外， ~ 也表示为 home 目录 的意思， . 则是表示目前所在的目录
linux中cd cd~ cd cd 和cd..之间的区别 cd 进入用户主目录 cd ~ 进入用户主目录 cd 返回进入此目录之前所在目录 cd .. 返回上一级目录 cd .. .. 返回上两级目录 cd !$ 把上个命令的参数作为cd 参数使用 cd 进入根目录 cd . 当前目录
简介： 在 Linux 系统中，“cd”命令用于切换当前工作目录。 本文详细介绍了“cd”命令的基本用法和常见技巧，包括使用“.”、“..”、“~”、绝对路径和相对路径，以及快速切换到上一次工作目录等。
cd命令来自英文词组change directory的缩写，其功能是更改当前所处的工作目录，路径可以是绝对路径，也可以是相对路径，若省略不写则会跳转至当前使用者的家目录。 语法格式：cd 参数 目录名常用参数： L切换至符号
在脚本或批处理内执行的 cd，也会产生不同的结果。 在DOS中，批处理文件中使用的该命令可以直接改变调用者的当前目录；而在Unix下，使用 cd 命令的脚本则无法改变调用者的当前目录。 这是因为在Unix下的脚本通常在子外壳中执行。
cd 命令设置某一进程的当前工作目录。 用户必须具有指定目录中的执行（搜索） 许可权。 如果未指定目录参数，cd 命令会将当前工作目录设置为登录目录（在 ksh 和 bsh 环境中是 $HOME，而在 csh 环境中则是 $home）。
cd 命令是 “更改目录 “的简称，是 Linux 操作系统中最基本、最常用的命令之一。 它的主要用途是在文件系统中的不同目录之间导航。 通过让用户轻松地从一个文件夹切换到另一个文件夹， cd 命令在文件管理和系统导航中发挥着至关重要的作用。
cd #进入用户主目录； cd ~ #进入用户主目录； cd #返回进入此目录之前所在的目录； cd .. #返回上级目录（若当前目录为“ “，则执行完后还在“ "；".."为上级目录的意思）； cd .. .. #返回上两级目录； cd !$ #把上个命令的参数作为cd参数使用。 切换到上级目录
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