Git is a version control system that allows users to track changes to files over time. It allows users to revert files or entire projects to previous states, see who made changes and when, and compare changes over time. Basic Git commands include clone to copy a remote repository locally, commit to submit files to the local repository, fetch/pull to update from a remote repository, and push to submit code to a remote repository. Users configure Git with their username and email and initialize repositories locally with git init. Files are added to repositories with git add before committing changes.

1. GIT
Presented by
Md. Zabirul Islam
Roll:1507110

2. What is Git?
Git is an example of “Version control system”
 Version control system that keep records your changes to a
file over time so that you can recall specific versions later.
 It allows you to:
 Revert files to previous state.
 Revert entire project back to previous state.
 Allows you to know who made what changes and when.
 Compare changes over time.

7. Basic Keyword
 master - the repository’s main branch. Depending on the work flow it is the one
people work on or the one where the integration happens
 clone - copies an existing git repository, normally from some remote location to
your local environment.
 commit - submitting files to the repository (the local one); in other VCS it is often
referred to as “checkin”
 fetch or pull - is like “update” or “get latest” in other VCS. The difference between
fetch and pull is that pull combines both, fetching the latest code from a remote
repo as well as performs the merging.

8.  push - is used to submit the code to a remote repository
 remote - these are “remote” locations of your repository, normally on some
central server.
 head - is a reference to the node to which our working space of the repository
currently points.
 branch - is just like in other VCS with the difference that a branch in Git is
actually nothing more special than a particular label on a given node. It is not a
physical copy of the files as in other popular VCS.

9. Git Configuration
$ git config --global user.name "username": to config username with the git
remote repository
$ git config --global user.email example@example.com: to config username
and email with the git remote repository
$ git init : is used to initialize git in your local repository

10. Cloning project from a remote repository
$ git clone <remote_repo> : is used to clone the remote repository into local
(clone means copy)
Example: $ git clone git@gitlab.com:user/myproject.git
$ git clone -b <branch> <remote_repo> : is used to clone from a specific
branch at the remote repository into local
Example: $ git clone -b feature git@gitlab.com:user/myproject.git
This example means that we clone from branch “feature” at the remote repository
name “myproject”.

11. Adding file to a remote repository
$ git add <file_name> : is used to add the specific file name to the remote
repository
$ git add . : is used to add all the changed file to the remote repository (Git will
take a snapshot of the contents of all files under the current directory (note the .))
$ git add -a/ $ git add -A : it will find new files as well as staging modified
content and removing files that are no longer in the working tree.
$ git add --all : the same as git add -a
$ git add * : the same as git add .