Overview
SSH provides secure encrypted communication between remote systems.
Why It Matters
SSH is the standard for secure remote access and server administration.
Essential Commands
ssh user@serverConnect to remote server over SSH
ssh -i ~/.ssh/id_ed25519 user@serverConnect using specific key file
ssh-copy-id user@serverInstall public key on remote host
scp file.txt user@server:/tmp/Copy local file to remote host
ssh -L 5432:localhost:5432 user@serverCreate local port-forward tunnel
ssh -J bastion user@internal-hostConnect through jump host
Quick Start
Begin by learning generate and configure ssh keys
Key Concepts
Generate and configure SSH keys
Create SSH config for managing multiple hosts
Use SSH tunneling for port forwarding
Pro Tips
- Combine multiple commands for powerful workflows
- Use aliases to speed up your command entry
- Create scripts to automate repetitive tasks
Common Pitfalls to Avoid
- • Forgetting to check the documentation for edge cases
- • Running commands without understanding their full impact
- • Not testing changes in a safe environment first