Git

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git (2005) is a distributed revision control software.

Activities

Git Installation

  1. Download Git from https://git-scm.com/downloads.
  2. Install Git. (MacOS: brew install git)

Copy an existing remote repository

  1. Clone a remote repository.
    • Select a local folder to copy the repository into, or create a new folder if you prefer. The repository will be copied as a subdirectory of the selected folder.
    • At a command or terminal prompt, navigate to the selected folder.
    • Clone the repository using the command:
      git clone URL_TO_REPO. See also: git pull and git fetch

Create a local repository

  1. Initialize a folder for Git.
    • Select a local folder to add to Git, or create a new folder if you are starting a new project.
    • At a command or terminal prompt, navigate to the selected folder.
    • Initialize the folder using the command:
      git init

Make Local Changes and Update remote Repositories

Retrieve Remote Changes

  • Pull/get changes from a remote repository to have latest version of the code
    • Pull/get changes from a remote repository to your local repository using the command:
git pull or git pull <name> <branch>
git pull -v (for more verbose output)
git fetch
gfind $1 -name ".git" | gsed -r 's|/[^/]+$||' | parallel "echo {}; git -C {} pull" (git pull all your repos in parallel, MacOS version)
  • Pull subdirectories:
ls | parallel git -C {} pull (assuming all sub-dirs are git repositories)[1]
ls | parallel git -C {} fetch
-C <PATH> run as if git was started in <path> instead of the current working directory.

Repository information

git log

git log, git shortlog, git log --all

Git show

Tags / Releases

  • Show all tags in git log:[3] git log --no-walk --tags --pretty="%h %d %s" --decorate=full
  • git tag (show releases)
  • List tags with dates: git log --tags --simplify-by-decoration --pretty="format:%ci %d"[4]. Just can also add taglog = log --tags --simplify-by-decoration --pretty='format:%ci %d' (note the single-, NOT double-quotes) in the [alias] section of your gitconfig file.

Miscelaneous

  • git log --decorate=full --simplify-by-decoration
  • Print lines matching a pattern:git grep TEXT_TO_SEARCH
  • git merge[5]

Tips and Tricks

  • To avoid using --pager in all git log commands, add the following line to your ~/.bash_profile file:[6]
    export GIT_PAGER=cat

Security

Related terms

Related software

Activities

  1. Clone some git public repositories
  2. Learn what is a merge or pull request: https://stackoverflow.com/questions/23076923/what-is-a-merge-request
  3. Create your first website in Website Hosting using git
  4. Read StackOverflow questions about Git: https://stackoverflow.com/questions/tagged/git?tab=Votes
  5. Make Local Changes and Update remote Repositories

See also


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