Test your ssh terminal connection with github account, (ssh authentication)

ssh_authentication.txt

1. You mast have a public key from your mashine stored on github as SSH key here: 
https://github.com/settings/ssh

How to create ssh key on unix/mac os x:
 - Open terminal, go to the root typing: $ cd ~ (recommended)
 - Type: ssh-keygen -t rsa -C "your@email.address"
 - To secure your ssh key ststem will ask you for passphrase (recommended) but you can skip it also
 - That's you have the ssh key
 - Check it with: $ ls -al ~/.ssh
 - Type: $ cd .ssh
 - Then open it with: $ less id_rsa.pub
 - Your ssh key is here and you can copy it to the github, or bitbucket and connect your terminal with online repos.
More details: 
https://www.youtube.com/watch?v=5jdalvKzl98

2. Run in terminal
      $ ssh -T git@github.com
      # Attempts to ssh to GitHub
      
  You may see one of these warnings:

The authenticity of host 'github.com (192.30.252.1)' 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)?

The authenticity of host 'github.com (192.30.252.1)' can't be established.
RSA key fingerprint is nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8.
Are you sure you want to continue connecting (yes/no)?

3. Verify that the fingerprint in the message you see matches the following message, then type yes:

Hi username (Your github username)! You've successfully authenticated, but GitHub does not
provide shell access.
You may see this error message:

...
Agent admitted failure to sign using the key.
debug1: No more authentication methods to try.
Permission denied (publickey).

DONE!

Note that if you have no public ssh kay(On your github account) you should generate it use
the steps below:

1. Check your SSH key

$ ls -al ~/.ssh
# Lists the files in your .ssh directory, if they exist

2. See it in terminal
$ cat ~/.ssh/id_rsa.pub

3. Copy your public key and paste it to github 
   (https://github.com/settings/ssh) 
   
4. Test the connection (in your terminal)
   $ ssh -T git@github.com

See more details : https://help.github.com/articles/generating-ssh-keys/

2. See it in terminal
   $ cat ~/.ssh/id_dsa.pub

should be

2. See it in terminal
   $ cat ~/.ssh/id_rsa.pub

Corrected :) Thanks a lot @Anselmoo

1. See it in terminal
   $ cat ~/.ssh/id_dsa.pub

should be

1. See it in terminal
   $ cat ~/.ssh/id_rsa.pub

Corrected :) Thanks a lot @Anselmoo

should I write all the inside the key or just the hash. cuz there is email that I think it's no need to put on the ssh key, right?

@hafizdkren Yes, including an email as well. Please take a few minutes to see more details here:
https://jdblischak.github.io/2014-09-18-chicago/novice/git/05-sshkeys.html

if I dont have the ( cat ~/.ssh/id_rsa.pub ) what do I do?

you should run ssh-keygen -t rsa -b 4096 -C "your-name" then follow the terminal finsih the creation of keygen then try again @aharo24