SSH

Table of Contents

1. Set up passwordless SSH
2. Set up SSH on Github
3. SSH activation script
4. Start ssh-agent automatically

Set up passwordless SSH

1. Start the ssh-agent in the background

    eval "$(ssh-agent -s)"
   

2. Generate new SSH key

    ssh-keygen -C "your_email@example.com"
   

3. Add SSH key to the ssh-agent

    ssh-add {path/to/SSH_key)
   

4. Copy ssh-key to the remote server

    ssh-copy-id remote_username@server_ip_address
   

5. Begin ssh to the remote server

    ssh remote_username@server_ip_address
   

Set up SSH on Github

1. Generate new SSH key

    ssh-keygen -C "your_email@example.com"
   

2. (Optional) Set personalized filename for SSH_key

    > Enter a file in which to save the key (/Users/you/.ssh/id_ed25519): [Press enter]
   

3. Start the ssh-agent in the background

    eval "$(ssh-agent -s)"
   

4. Add SSH key to the ssh-agent

    ssh-add {path/to/SSH_key)
   

5. Copy content of SSH_key.pub to your Github account
6. Test your SSH connection with Github

    ssh -T git@github.com
   

SSH activation script

#!/usr/bin/bash

# SSH credentials
SSH_KEY=$HOME/.ssh/github

# Activation script
eval "$(ssh-agent -s)"
ssh-add $SSH_KEY
echo "GitHub credentials activated!"

Start ssh-agent automatically

1. Append ~/.bashrc file with the following content.

    # Start ssh-agent if it's not already running
   
    if [ -z "$SSH_AUTH_SOCK" ]; then
      eval "$(ssh-agent -s)"
    fi
   

2. You might also want to add your ssh-key automatically. Just append your key in the ~/.bashrc file.

    # Add keys to ssh-agent
   
    SSH_KEYS_TO_ADD=(
      "$HOME/.ssh/id_rsa"
      "$HOME/.ssh/id_ed25519"
      # Add more key paths here, one per line
      # "$HOME/.ssh/my_other_key"
    )
       
    for key_path in "${SSH_KEYS_TO_ADD[@]}"; do
      if [ -f "$key_path" ]; then
        echo "Adding key: $key_path"
        ssh-add "$key_path" || echo "Failed to add key: $key_path (check passphrase or file permissions)"
      else
        echo "Warning: Private key file not found: $key_path"
      fi
    done