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SSH

SSH Commands

  • ssh-copy-id user@hostname
    Login without password

  • ssh-keygen -R hostname
    Remove entries in ~/.ssh/known_hosts

SSH Config

Connect via ssh alias by setting the alias in ~/.ssh/config

Basic

ssh user@10.10.10.10 -p 4000

Host alias
  HostName 10.10.10.10
  Port 4000
  User user

Proxy Server

ssh -J user@10.10.10.10:4000 user@192.168.0.10

Host alias
  HostName 192.168.0.10
  ProxyJump 10.10.10.10:4000
  User user

Forward Port

ssh -L 6000:localhost:5901 user@10.10.10.10 -p 4000

Host alias
  HostName 10.10.10.10
  Port 4000
  LocalForward 6000 localhost:5901
  User user

Local Command

ssh -L 6000:localhost:5901 user@10.10.10.10 -p 4000 -o 'LocalCommand=echo "Connect localhost:6000'

Host alias
  HostName 10.10.10.10
  Port 4000
  LocalForward 6000 localhost:5901
  LocalCommand echo "Connect localhost:6000"
  PermitLocalCommand yes  # or set in General Rules section
  User user

Remote Command

ssh user@10.10.10.10 -p 4000 -t -o 'RemoteCommand=cd folder/ && bash -l'

Host alias
  HostName 10.10.10.10
  Port 4000
  RemoteCommand cd folder/ && bash -l
  RequestTTY force
  User user

General Rules

Host *
  AddKeysToAgent yes     # MacOS only
  UseKeychain yes        # MacOS only
  ServerAliveInterval 60  # For not disconnecting
  ServerAliveCountMax 10  # For not disconnecting
  PermitLocalCommand yes