If no user name is found, the local user name is used. Non-quoted shell metacharacters on the command line are interpreted on the local machine, while quoted metacharacters are interpreted on the remote machine. Options -D enables socket debugging on the TCP sockets used for communication with the remote host.
All output is sent to standard output.
This is useful when you are running an interactive command. If a password is not found, the user is prompted to enter a password. Troubleshooting If you are having trouble connecting to rexecd on a remote host, here are some possible solutions to your problems. Most versions of rexecd have a limit to the length of user name they can handle. On some UNIX systems, this limit is as low as 14 characters.