List logged in *console* users on MacOS X

gistfile1.m

#import <Foundation/Foundation.h>
#import <utmpx.h>

// CCFLAGS="-std=c99 -framework Foundation -arch i386 -mmacosx-version-min=10.6"

NSSet *ConsoleUsers(void)
{
  NSMutableSet *userList = [NSMutableSet set];
	
	struct utmpx *userTmp = getutxent();
	while ( userTmp != NULL) {
	
	NSLog(@"\n========= Username: %s =========", userTmp->ut_user);
	NSLog(@"userTmp->ut_user: %s", userTmp->ut_user);
	NSLog(@"userTmp->ut_id: %s", userTmp->ut_id);
	NSLog(@"userTmp->ut_line: %s", userTmp->ut_line);
	NSLog(@"userTmp->ut_pid: %d", userTmp->ut_pid);
	NSLog(@"userTmp->ut_type: %d", userTmp->ut_type);

		NSString *username = [NSString stringWithUTF8String:userTmp->ut_user];
		BOOL isConsoleUser = [[NSString stringWithUTF8String:userTmp->ut_line] isEqualToString:@"console"];
		if ([username length] > 0 && isConsoleUser && userTmp->ut_type != DEAD_PROCESS )
			[userList addObject:username];
		
		userTmp = getutxent();
	}
	endutxent();
	
	return userList;
}


int main(int argc, char *argv[]) {
	NSAutoreleasePool *p = [[NSAutoreleasePool alloc] init];

	NSSet *users = ConsoleUsers();
	NSLog(@"Console users: %@", users);

	[p release];
}