git_errors.txt

# git push -u origin master


The authenticity of host 'github.com (192.30.252.130)' can't be established.
RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added 'github.com,192.30.252.130' (RSA) to the list of known hosts.
Enter passphrase for key '/root/.ssh/id_rsa': 

ERRORS
---------
To git@github.com:nn987/Java_Files.git
 ! [rejected]        master -> master (non-fast-forward)
error: failed to push some refs to 'git@github.com:nn987/Java_Files.git'
hint: Updates were rejected because the tip of your current branch is behind
hint: its remote counterpart. Merge the remote changes (e.g. 'git pull')
hint: before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.

SOLUTIONs
-------------
do this only After you clone a repository and commit a few changes of your own

# git pull 

Warning: Permanently added the RSA host key for IP address '192.30.252.128' to the list of known hosts.
Enter passphrase for key '/root/.ssh/id_rsa': 
warning: no common commits
remote: Counting objects: 3, done.
remote: Total 3 (delta 0), reused 0 (delta 0)
Unpacking objects: 100% (3/3), done.
From github.com:nn987/Java_Files
 * [new branch]      master     -> origin/master
There is no tracking information for the current branch.
Please specify which branch you want to merge with.
See git-pull(1) for details

    git pull <remote> <branch>

If you wish to set tracking information for this branch you can do so with:

    git branch --set-upstream master origin/<branch>

-------------
# git fetch
# git merge origin/master

error Your local changes to the following files would be overwritten by merge:
  git_errors.txt
Please, commit your changes or stash them before you can merge.
Aborting
-------------