Styjun

I am very new to Git; I only recently created a GitHub account.

I've just tried to push my very first repository (a sample project), but I'm getting the following error:

No such remote 'origin'

I ran the following commands:

git init
git commit -m "first commit"
git remote add origin https://github.com/VijayNew/NewExample.git
git push -u origin master

However, when I ran git commit -m "first commit", I got the following message:

nothing added to commit but untracked files present (use "git add" to track)

So then I tried to set origin, using

git remote set-url origin https://github.com/VijayNew/NewExample.git

But I got the following error:

No such remote 'origin'

What did I do wrong, and what should I do?

Two problems:

1 - You never told Git to start tracking any file

You write that you ran

git init
git commit -m "first commit"

and that, at that stage, you got

nothing added to commit but untracked files present (use "git add" to track).

Git is telling you that you never told it to start tracking any files in the first place, and it has nothing to take a snapshot of. Therefore, Git creates no commit. Before attempting to commit, you should tell Git (for instance):

Hey Git, you see that README.md file idly sitting in my working directory, there? Could you put it under version control for me? I'd like it to go in my first commit/snapshot/revision...

For that you need to stage the files of interest, using

git add README.md

before running

git commit -m "some descriptive message"

2 - You haven't set up the remote repository

You then ran

git remote add origin https://github.com/VijayNew/NewExample.git

After that, your local repository should be able to communicate with the remote repository that resides at the specified URL (https://github.com/VijayNew/NewExample.git)... provided that remote repo actually exists!
However, it seems that you never created that remote repo on GitHub in the first place: at the time of writing this answer, if I try to visit the correponding URL, I get

Before attempting to push to that remote repository, you need to make sure that the latter actually exists. So go to GitHub and create the remote repo in question. Then and only then will you be able to successfully push with

git push -u origin master

I'm guessing you didn't run this command after the commit failed so just actually run this to create the remote :

 git remote add origin https://github.com/VijayNew/NewExample.git

And the commit failed because you need to git add some files you want to track.

I faced this issue when I was tring to link a locally created repo with a blank repo on github.
Initially I was trying git remote set-url but I had to do git remote add instead.

git remote add origin https://github.com/VijayNew/NewExample.git