Current functionality to move files is.. well, interesting. Add support for user to select the file transfer mode and add possibility to use scp instead the current base64 method.

Add support for .ssh/config file and use parameters from there for timeout, identityfile, known_hosts file, sendenv, host key algorithms etc. These configurations should be applied to the system first before the envssh specific configuration which can override the ones in openssh client configuration.

Allow running command on remote server instead starting remote shell (just like normal ssh client works). If there is argument after the destination, use it as the command to be run at the remote.

Add timeout configuration for host/global configuration and use it when client is dialing to the server.

Add proxy support for configuration file for global config and server specific config. This means the proxy host, port, username and password. In case proxy is set use it to connect to the target server. This is possible by using the:

proxyClient := ssh.Dial(proxy)
conn := proxyClient.Dial(target) // without config
clientConn, channels, reqs := ssh.NewClientConn(conn, targetConfig)
client := ssh.NewClient(clientConn, channels, reqs)

Allow setting the PTY term for global/server specific configuration. Default should be 'auto' and work as it does currently but it should be possible to set this up based on host or globally.

Add aliases for the server specific configuration and allow using the alias for connection destination instead the actual hostname or IP address. This enhancement would be very handy especially if you are only using IP addresses to connect to remotes.

For example:

envssh my_computer:1234

would find out ServerConfig with alias my_computer and user hostname from there

Add option to set SSH port with CLI option. The CLI option should override all other possibilities for the port including configuration file and remote.

Add CLI option to set logfile location for the envssh. Pass this to the logger instance from main function to be used later on for all logging.

Support is needed to be able to connect to remote using public key authentication. Possibly need to add additional CLI parameters for identity file etc.

Add possibility to add multiple servers to use the same configuration either with wildcard or list of hostnames. This would allow to differentiate the configuration to multiple servers without adding the configuration to global.

Add CLI parameter to log to stdout/stderr (for fatals) instead file. The CLI param should configure the default Logger from util package.

SetEnv only allows setting environment variables that are allowed by the SSH server in AcceptEnv configuration. It could be possible to get around this by using "export" command right after the interactive session has been started.

Currently Windows defaults to terminal size 80x24 as it cannot get the correct w/h from terminal.GetSize. Also the resize event does not work due to missing SIGWINCH signal. Fix terminal size initialization and resizing.

See golang/go#20388

Add support to use SSH Agent to authenticate against the remote SSH server. See example from here: https://github.com/golang/crypto/blob/master/ssh/agent/example_test.go

When files are copied to remote they are currently left as they are. Allow user to select if they need to be cleaned up after disconnect. This would mean that existing files on the remote need to be backed up and restored when the interactive session is closed as well as the copied files need to be removed.