diff --git a/usr.bin/cpuset/cpuset.c b/usr.bin/cpuset/cpuset.c
--- a/usr.bin/cpuset/cpuset.c
+++ b/usr.bin/cpuset/cpuset.c
@@ -56,9 +56,11 @@
 static int cflag;
 static int dflag;
 static int gflag;
+static int Hflag;
 static int iflag;
 static int jflag;
 static int lflag;
+static int Nflag;
 static int nflag;
 static int pflag;
 static int rflag;
@@ -244,7 +246,7 @@
 				    "prefer", "interleave" };
 
 static void
-printaffinity(void)
+printaffinityorcount(void)
 {
 	domainset_t domain;
 	cpuset_t mask;
@@ -252,10 +254,20 @@
 
 	if (cpuset_getaffinity(level, which, id, sizeof(mask), &mask) != 0)
 		err(EXIT_FAILURE, "getaffinity");
-	printf("%s %jd%s mask: ", whichnames[which], (intmax_t)id,
-	    levelnames[level]);
-	printset((struct bitset *)&mask, CPU_SETSIZE);
-	if (dflag || xflag)
+	if (!Hflag) {
+		if (Nflag) {
+			printf("%s %jd%s CPU count: ", whichnames[which],
+			    (intmax_t)id, levelnames[level], CPU_COUNT(&mask));
+		} else {
+			printf("%s %jd%s mask: ", whichnames[which],
+			    (intmax_t)id, levelnames[level]);
+		}
+	}
+	if (Nflag)
+		printf("%d\n", CPU_COUNT(&mask));
+	else
+		printset((struct bitset *)&mask, CPU_SETSIZE);
+	if (dflag || Hflag || Nflag || xflag)
 		goto out;
 	if (cpuset_getdomain(level, which, id, sizeof(domain), &domain,
 	    &policy) != 0)
@@ -279,8 +291,11 @@
 		level = CPU_LEVEL_CPUSET;
 	if (cpuset_getid(level, which, id, &setid))
 		err(errno, "getid");
-	printf("%s %jd%s id: %d\n", whichnames[which], (intmax_t)id,
-	    levelnames[level], setid);
+	if (!Hflag) {
+		printf("%s %jd%s id: ", whichnames[which], (intmax_t)id,
+		    levelnames[level]);
+	}
+	printf("%d\n", setid);
 }
 
 int
@@ -300,7 +315,7 @@
 	level = CPU_LEVEL_WHICH;
 	which = CPU_WHICH_PID;
 	id = pid = tid = setid = -1;
-	while ((ch = getopt(argc, argv, "Ccd:gij:l:n:p:rs:t:x:")) != -1) {
+	while ((ch = getopt(argc, argv, "Ccd:gHij:l:Nn:p:rs:t:x:")) != -1) {
 		switch (ch) {
 		case 'C':
 			Cflag = 1;
@@ -317,6 +332,9 @@
 		case 'g':
 			gflag = 1;
 			break;
+		case 'H':
+			Hflag = 1;
+			break;
 		case 'i':
 			iflag = 1;
 			break;
@@ -335,6 +353,9 @@
 			nflag = 1;
 			parsedomainlist(optarg, &domains, &policy);
 			break;
+		case 'N':
+			Nflag = 1;
+			break;
 		case 'p':
 			pflag = 1;
 			which = CPU_WHICH_PID;
@@ -368,17 +389,19 @@
 	if (gflag) {
 		if (argc || Cflag || lflag || nflag)
 			usage();
+		if (iflag && Nflag)
+			usage();
 		/* Only one identity specifier. */
 		if (dflag + jflag + xflag + sflag + pflag + tflag > 1)
 			usage();
 		if (iflag)
 			printsetid();
 		else
-			printaffinity();
+			printaffinityorcount();
 		exit(EXIT_SUCCESS);
 	}
 
-	if (dflag || iflag || rflag)
+	if (dflag || Hflag || iflag || Nflag || rflag)
 		usage();
 	/*
 	 * The user wants to run a command with a set and possibly cpumask.
@@ -469,7 +492,7 @@
     "       cpuset [-c] [-l cpu-list] [-n policy:domain-list]\n"
     "              [-j jailid | -p pid | -t tid | -s setid | -x irq]\n");
 	fprintf(stderr,
-    "       cpuset -g [-cir]\n"
+    "       cpuset -g [-cHiNr]\n"
     "              [-d domain | -j jailid | -p pid | -t tid | -s setid | -x irq]\n");
 	exit(1);
 }