putty

Connect to SSH server

$ putty -ssh [user@host]

$ putty -ssh -P [2222] [user@host]

$ putty -load "[session_name]"

$ putty -serial [/dev/ttyUSB0]

$ putty -ssh -i [key.ppk] [user@host]

putty [options] [host]

PuTTY is a free terminal emulator and network file transfer application supporting SSH, Telnet, SCP, and serial connections. Originally developed for Windows where no built-in SSH client existed, it has become one of the most widely used remote access tools and is also available on Linux and macOS.
PuTTY stores connection profiles as saved sessions, allowing quick access to frequently used servers with preconfigured settings for port, protocol, key authentication, and terminal appearance. It uses its own PPK key format, though keys can be converted to and from OpenSSH format using the companion puttygen tool. The PuTTY suite includes plink for command-line connections, pscp and psftp for file transfer, and pageant for SSH agent key management.

HOST

Target hostname.

SSH connection.

Telnet connection.

Serial connection.

Port number.

Private key file.

Load saved session.

~/.putty/sessions/

Saved session profiles containing connection settings, port, protocol, key file path, and terminal configuration.

Cache of SSH host keys for known servers, used to detect man-in-the-middle attacks.

Directory for private key files in PPK format used for public key authentication.

Uses PPK key format. Also available on Linux.

PuTTY was created by Simon Tatham for Windows SSH connections.

ssh(1), plink(1), pscp(1)