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Tutorials › Linux Command Line › SSH

SSH

5 min read
SSH connects to remote servers: ssh user@host. Set up key-based login with ssh-keygen and ssh-copy-id for passwordless access. Save shortcuts in ~/.ssh/config with Host, HostName, User, and IdentityFile.

SSH — Secure Shell

# Connect
ssh alice@192.168.1.10
ssh -p 2222 user@server

# Key-based auth (more secure)
ssh-keygen -t ed25519   # generate key pair
ssh-copy-id user@server # copy public key to server

# Shortcut in ~/.ssh/config
Host myserver
  HostName 192.168.1.10
  User alice
  IdentityFile ~/.ssh/mykey

ssh myserver  # use the shortcut