Setup

• Git is a single executable.

• git is the command you will use to access all of its features.

Installation

• Windows:

  https://git-scm.com/download/win

• macOS

  https://git-scm.com/download/mac

• Linux

  • preinstalled on most distributions
  • https://git-scm.com/download/linux

$ git version
git version 2.25.1

$ git help
usage: git [--version] [--help] [-C <path>] [-c <name>=<value>]
           [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
           [-p | --paginate | -P | --no-pager] [--no-replace-objects] [--bare]
           [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
           <command> [<args>]

These are common Git commands used in various situations:

start a working area (see also: git help tutorial)
   clone             Clone a repository into a new directory
   init              Create an empty Git repository or reinitialize an existing one

work on the current change (see also: git help everyday)
   add               Add file contents to the index
   mv                Move or rename a file, a directory, or a symlink
   restore           Restore working tree files
   rm                Remove files from the working tree and from the index
   sparse-checkout   Initialize and modify the sparse-checkout

examine the history and state (see also: git help revisions)
   bisect            Use binary search to find the commit that introduced a bug
   diff              Show changes between commits, commit and working tree, etc
   grep              Print lines matching a pattern
   log               Show commit logs
   show              Show various types of objects
   status            Show the working tree status

grow, mark and tweak your common history
   branch            List, create, or delete branches
   commit            Record changes to the repository
   merge             Join two or more development histories together
   rebase            Reapply commits on top of another base tip
   reset             Reset current HEAD to the specified state
   switch            Switch branches
   tag               Create, list, delete or verify a tag object signed with GPG

collaborate (see also: git help workflows)
   fetch             Download objects and refs from another repository
   pull              Fetch from and integrate with another repository or a local branch
   push              Update remote refs along with associated objects

'git help -a' and 'git help -g' list available subcommands and some
concept guides. See 'git help <command>' or 'git help <concept>'
to read about a specific subcommand or concept.
See 'git help git' for an overview of the system.

Configuration

Git requires an one-time configuration to introduce yourself to git.

• About yourself

  • Your name
  • Your email

• Why does git need your info?

  git is a distributed version control system, which means that multiple (thousands) developers can collaborate on a single project.

  It's important to track the author of the incremental changes between commits along the timeline.

• Your identity

  Git can be configured as:

  \$ git config --global user.name "<...>"
  \$ git config --global user.email "<...>@<...>"
  

• You can examine the configuration parameters anytime.

  $ git config --list
  
  user.name=Ken Pu
  user.email=kenpuca@gmail.com