To test my TCP/IP libraries I created a bunch of programs mimicking the Unix commands with the same name. Some of these tools were really useful and another simple hacks to test the protocols.
The included programs were:
The source code included here can be compiled using Turbo C (with KIP (TCP/IP Stack) Library), DJGPP (with KipDJ (KIP for DJGPP)), WIN32 (with the lccwin32 compiler) and Unix (tested under Linux and SunOS 4).
http://triptico.com/download/kiptools.zip