This option tells Ncat to convert LF line endings to CRLF when taking input from standard input. This is useful for talking to some stringent servers directly from a terminal in one of the many common plain-text protocols that use CRLF for end-of-line.

Displays a short help screen with common options and parameters, and then exits.

If this option is passed, Ncat will only receive data and will not try to send anything.

If this option is passed, then Ncat will only send data and will ignore anything received. This option also causes Ncat to close the network connection and terminate after EOF is received on standard input.

Handle DO/DONT WILL/WONT Telnet negotiations. This makes it possible to script Telnet sessions with Ncat.

Displays the Ncat version number and exits.