Access Denied to Android.Git.Kernel.Org

GitHub Error Message - Permission denied (publickey)

GitHub isn't able to authenticate you. So, either you aren't setup with an SSH key, because you haven't set one up on your machine, or your key isn't associated with your GitHub account.

You can also use the HTTPS URL instead of the SSH/git URL to avoid having to deal with SSH keys. This is GitHub's recommended method.

Further, GitHub has a help page specifically for that error message, and explains in more detail everything you could check.

Git push error: Unable to unlink old (Permission denied)

When you have to unlink file, you have to have permission 'w' for directory, in which file is, not for the file...

The flutter create command tries to access the root directory and fails

If you are using Arch this could be applicable to you. I was having this problem when installing flutter via yay/AUR. Installing the package manually from https://flutter.dev/docs/get-started/install/linux solved the problem. create doesn't try to access anything in /root/ and I can run the command without using sudo.

fatal: unable to access .....: gnutls_handshake() failed: Handshake failed

This error means that Git cannot establish a secure connection to the server you're trying to use. Your version of Git uses the GnuTLS library to set up TLS (encrypted) connections, and for some reason that setup process is failing.

This could be for a couple of reasons. One is that your server (which one you haven't mentioned) is using an incompatible set of cipher suites or TLS versions, and there's no encryption algorithms in common that can be chosen. It's also possible that you have someone tampering with the connection via a MITM device.

The version of Git and GnuTLS you're using should work just fine with most standard servers. Re-installing it won't help. You can try upgrading to a newer version of Debian, or you can try building Git yourself against a version of libcurl using OpenSSL. You can also just switch to SSH-based remotes, which will avoid this incompatibility altogether.

HTTP Basic: Access denied fatal: Authentication failed

Open CMD (Run as administrator)
type command:

git config --system --unset credential.helper

then enter new password for Git remote server.

fatal: could not create work tree dir 'kivy'

You should do the command in a directory where you have write permission. So:

cd ~/
mkdir code
cd code
git clone https://github.com/kivy/kivy

For example.

GitHub - failed to connect to github 443 windows/ Failed to connect to gitHub - No Error

Well I did following steps

1. Google the error

2. Got to SO Links(here, here) which suggested the same thing, that I have to update the Git Config for proxy setting

3. Damn, can not see proxy information from control panel. IT guys must have hidden it. I can not even change the setting to not to use proxy.

4. Found this wonderful tutorial of finding which proxy your are connected to

5. Updated the http.proxy key in git config by following command

   git config --global http.proxy http[s]://userName:password@proxyaddress:port
   

6. Error - "could not resolve proxy some@proxyaddress:port". It turned out my password had a @ symbol in it.

7. Encode @ in your password to %40, because git splits the proxy setting by @

8. If your userName is a email address, which has @, also encode it to %40. (see this answer)

    git config --global http.proxy http[s]://userName(encoded):password(encoded)@proxyaddress:port
   

Baam! It worked!

Note - I just wanted to answer this question for souls like me, who would come looking for answer on SO :D

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