GIT Basic

git log
Display the entire commit history using the default format.For customization see additional options
git log -[limit]
Limit number of commits by [limit].
E.g. ”git log -5” will limit to 5 commits.
git log –follow [file]
Lists version history for a file, including renames

git diff
Show unstaged changes between your index and working directory.
git diff HEAD
Show difference between working directory and last commit.
git diff –cached
Show difference between staged changes and last commit
git diff [first-branch]…[second-branch]
Shows content differences between two branches

git show [commit]
Outputs metadata and content changes of the specified commit

Deleting Branches

Deleting local branches

git branch -a
# *master
#  test
#  remote/origin/master
#  remote/origin/test

git branch -d test
# Deleted branch test .

Deleting remote branches

git branch -a
# *master
#  test
#  remote/origin/master
#  remote/origin/test

git push origin --delete test
# To <URL of your repository>.git
#  - [deleted]         test

Github First Commit

git init
git add .
git commit -m "first commit"
git branch -M master
git remote add origin https://github.com/yourusername/repo.git
git push -u origin master

Git Hard Reset

  1. find the commit id using git log

    eg :id is fae696654853ae76cfa7f38a461c438cf75ba965

  2. reset the old one

     git reset --hard fae696654853ae76cfa7f38a461c438cf75ba965

  3. push it to remote server

     git push -f -u origin master  

    
 git reset --soft HEAD^      (going back to soft, not back to cancel the `git add`,the code is still changed)

 git reset --hard HEAD       (going back to HEAD)

 git reset --hard HEAD^      (going back to the commit before HEAD)

 git reset --hard HEAD~2     (going back two commits before HEAD)

Changing a remote’s URL

List your existing remotes in order to get the name of the remote you want to change.
```
git remote -v
> origin  git@github.com:USERNAME/REPOSITORY.git (fetch)
> origin  git@github.com:USERNAME/REPOSITORY.git (push)
```

Change your remote's URL from SSH to HTTPS with the git remote set-url command.
```
git remote set-url origin https://github.com/USERNAME/REPOSITORY.git
```