SSH Key, Tips

SSH.md

Connect Github by Using SSH Key on macOS

Based on Github Doc, and clarified the confusing parts

1. Open Terminal

2. Checking for existing SSH keys

   $ ls -al ~/.ssh
   # Lists the files in your .shh directory, if they exist
   
   # Make sure you don.t have `id_rsa_github` file
   # Otherwise you might already have a SSH key for github
   # Delete the existing `id_rsa_github` to start over with the below command
   $ rm ~/.ssh/id_rsa_github # (optional)

3. Creating a new SSH key for GitHub

   $ ssh-keygen -t rsa -b 4096 -C "[email protected]"
   # Above setting is Github recommend
   # t = type
   # b = bites

4. The first prompt, 🚧 Important 🚧

   > Enter a file in which to save the key (/Users/you/.ssh/id_rsa): [Press enter]
   # !! If you press enter, will over write `id_rsa`
   # So, I will enter
   $ /Users/you/.ssh/id_rsa_github #(optional)
   # To make the key unique

5. The second prompt

   # tread it as a password for the SSH Key
   > Enter passphrase (empty for no passphrase)
   # I using my computer password for the passphrase
   # You could leave it empty

6. Start the ssh-agent

   $ eval "$(ssh-agent -s)"
   # will return: > Agent pid 59566

7. Add Identity

   Add your SSH private key to the ssh-agent and store your passphrase in the keychain. If you created your key with a different name, or if you are adding an existing key that has a different name, replace id_rsa in the command with the name of your private key file.

   $ ssh-add -K ~/.ssh/id_rsa_github

   Note: The -K option is Apple's standard version of ssh-add, which stores the passphrase in your keychain for you when you add an ssh key to the ssh-agent.

8. Copy the new SSH Key

   cat ~/.ssh/id_rsa_github.pub # Copy manually
   # Or, using pbcopy
   pbcopy < ~/.ssh/id_rsa_github.pub

9. [Add the SSH key to your GitHub account.](Add the SSH key to your GitHub account.)

SiteHost

1. SSH to server

   $ ssh servername@ip_address
   # Using [email protected] as example below

2. Copy files

   $ scp ~/test.txt [email protected]:~
   # `~/` = Current Folder in local
   # `:~` = Server folder in root