Comprehensive Git Guide: Installation, Configuration, Basic Operations, Branching, and Remote Management

This guide explains how to install Git on Linux (using sudo yum install git or sudo apt-get install git ) and macOS (via the terminal or the official installer at git-scm.com).

It then covers Git configuration, emphasizing the importance of setting global user name and email with git config --global user.name "Your Name" and git config --global user.email [email protected] . It describes the three configuration levels ( --system , --global , and repository‑specific .git/config ) and shows how to query them.

Creating convenient aliases is demonstrated, for example git config --global alias.br branch and git config --global alias.ci commit . The .gitignore syntax is explained, including comment lines, glob patterns, and negation, with sample entries such as *.c , !stream.c , and build/ .

Basic repository operations are presented: initializing a repository with git init , adding files ( git add . , git add *.c , git add test.c ), checking status ( git status and git status --short ), viewing differences ( git diff , git diff --staged ), committing changes ( git commit -m "message" , git commit -a -m "msg" ), removing files ( git rm fileName , git rm -f fileName ), moving files ( git mv src dest ), and examining history with various git log options.

The article explains how to amend the last commit ( git commit --amend ), reset staged files ( git reset HEAD fileName ), and discard local changes ( git checkout -- filename ).

Tag management is covered, showing how to list tags ( git tag ), create annotated tags ( git tag -a v1.0 -m "msg" ) or lightweight tags ( git tag v1.0 ), push tags to a remote ( git push origin v1.4 , git push origin --tags ), and inspect tag details with git show v1.4 .

Branch operations are detailed: creating branches ( git branch dev or git checkout -b dev ), switching ( git checkout dev ), merging ( git merge dev ), deleting ( git branch -d dev , git branch -D dev ), listing branches with status ( git branch -v , git branch --merged , git branch --no-merged ), and rebasing ( git rebase master experiment followed by git checkout master and git merge experiment ).

Remote repository commands are illustrated: cloning ( git clone <url> [dirName] ), viewing remotes ( git remote -v , git remote show origin ), adding a remote ( git remote add rp [email protected]:repo.git ), fetching ( git fetch rp ), pulling ( git pull ), pushing ( git push origin master ), renaming ( git remote rename old new ), and removing ( git remote rm name ) remote definitions.

Tracking branches are explained, with commands such as git checkout --track origin/dev and setting upstream with git branch -u origin/dev or git branch -vv .

Overall, the article serves as a practical reference for developers to master Git’s essential and advanced features.