SSH Key

Date: March 31, 2025 2:57 PM

You need to set up SSH key-based authentication on your Mac. Follow these steps:

1. Generate an SSH Key (if you don’t have one)

Open the terminal and run:

ssh-keygen -t rsa -b 4096 -C "your_email@example.com"
  • When prompted for a file to save the key, press Enter to accept the default (~/.ssh/id_rsa).
  • If you want to avoid entering a passphrase, just press Enter when prompted.

2. Copy the Public Key to the Remote Server

Run:

ssh-copy-id user@remote_host
  • Replace user with your remote username and remote_host with the remote machine’s address.
  • If ssh-copy-id is not available, use:
cat ~/.ssh/id_rsa.pub | ssh user@remote_host "mkdir -p ~/.ssh && cat >> ~/.ssh/authorized_keys"

3. Set Correct Permissions

Ensure the correct permissions on the remote machine:

ssh user@remote_host
chmod 700 ~/.ssh
chmod 600 ~/.ssh/authorized_keys
exit

4. Test Passwordless SSH

Try logging in without a password:

ssh user@remote_host

If it logs you in without asking for a password, you’re all set! 🚀