//-------------------------------------------------------------------
//	arpwatch.cpp
//
//	This program executes the 'arp' command once per second to 
//	produce an up-to-date display of this station's ARP Cache.
//	(A user may terminate this program by typing <CONTROL>-C.)
//
//	     compile using:  $ g++ arpwatch.cpp -o arpwatch
//	     execute using:  $ ./arpwatch
//
//	programmer: ALLAN CRUSE
//	written on: 30 JAN 2009
//-------------------------------------------------------------------

#include <stdio.h>	// for printf() 
#include <stdlib.h>	// for system() 
#include <unistd.h>	// for sleep()  

char	legend[] = "Current contents of the ARP cache";

int main( int argc, char **argv )
{
	do	{
		printf( "\e[H\e[J" );
		printf( "\e[1;1H\n" );
		printf( "%55s\n\n", legend );
		system( "/sbin/arp" );
		printf( "\n" );
		sleep( 1 );
		}
	while ( 1 ); 
}