ncü

ncü is a command-line utility that facilitates network debugging and development. Its primary function is to establish simple network connections, allowing users to send and receive data between two points. This makes it useful for testing network services, simulating network conditions, and understanding how data flows across a network.

The tool is versatile, supporting both TCP and UDP protocols. Users can configure ncü to act as a client, connecting to a specified host and port, or as a server, listening for incoming connections on a particular port. Once a connection is established, ncü can relay data from standard input to the network connection and display any received network data on standard output. This capability allows for interactive testing of network applications.

ncü can be employed in a variety of scenarios. For instance, developers might use it to quickly check if a server is listening on a specific port or to send simple HTTP requests to a web server. It can also be used to create rudimentary chat applications or to pipe data between processes on different machines. Its simplicity and flexibility have made it a staple tool for network administrators, security professionals, and software developers. The tool's origins trace back to the original Unix utility, and various implementations exist across different operating systems.