Create an ssh session using ssh_connect(). The session can be used to execute
commands, scp files or setup a tunnel.
Usage
ssh_connect(host, keyfile = NULL, passwd = askpass, verbose = FALSE)
ssh_session_info(session)
ssh_disconnect(session)
libssh_version()Arguments
- host
an ssh server string of the form
[user@]hostname[:@port]. An ipv6 hostname should be wrapped in brackets like this:[2001:db8::1]:80.- keyfile
path to private key file. Must be in OpenSSH format (see details)
- passwd
either a string or a callback function for password prompt
- verbose
either TRUE/FALSE or a value between 0 and 4 indicating log level: 0: no logging, 1: only warnings, 2: protocol, 3: packets or 4: full stack trace.
- session
ssh connection created with
ssh_connect()
Details
The client first tries to authenticate using a private key, either from ssh-agent
or /.ssh/id_rsa in the user home directory. If this fails it falls back on
challenge-response (interactive) and password auth if allowed by the server. The
passwd parameter can be used to provide a passphrase or a callback function to
ask prompt the user for the passphrase when needed.
The session will automatically be disconnected when the session object is removed
or when R exits but you can also use ssh_disconnect().
Windows users: the private key must be in OpenSSH PEM format. If you open it in
a text editor the first line must be: -----BEGIN RSA PRIVATE KEY-----.
To convert a Putty PKK key, open it in the PuttyGen utility and go to
Conversions -> Export OpenSSH.
See also
Other ssh:
scp,
ssh_credentials,
ssh_exec,
ssh_tunnel()
Examples
if (FALSE) {
session <- ssh_connect("dev.opencpu.org")
ssh_exec_wait(session, command = "whoami")
ssh_disconnect(session)
}