diff --git a/yeeshell.c b/yeeshell.c
index c243b54..6f2e466 100644
--- a/yeeshell.c
+++ b/yeeshell.c
@@ -399,24 +399,28 @@ int builtin_history(char **args)
 
 int builtin_mytop()
 {
-	int memory_flag = 0, CPU_flag = 0;
-	memory_flag = mytop_memory();
-	CPU_flag = mytop_CPU();
-	if (!memory_flag)
-	{
-		return -1;
-	}
-	else if (!CPU_flag)
+	pid_t pid;
+	int cputimemode = 1;
+	if ((pid = fork()) < 0)
 	{
-		return -2;
+		printf("fork error\n");
+		return;
 	}
-	else
+	if (pid == 0)
 	{
-		return 1;
+		getkinfo();
+		mytop_memory();
+		get_procs();
+		if (prev_proc == NULL)
+		{
+			get_procs();
+		}
+		print_procs(prev_proc, proc, cputimemode);
+		exit(0);
 	}
 }
 
-int mytop_memory()
+void mytop_memory()
 {
 	FILE *fp = NULL;
 	int pagesize;
@@ -424,28 +428,15 @@ int mytop_memory()
 
 	if ((fp = fopen("/proc/meminfo", "r")) == NULL)
 	{
-		return 0;
+		exit(0);
 	}
 
 	fscanf(fp, "%u %lu %lu %lu", &pagesize, &total, &free, &cached);
 	fclose(fp);
 
-	printf("memmory(KBytes):\t%ld total\t%ld free\t%ld cached\n", (pagesize * total) / 1024, (pagesize * free) / 1024, (pagesize * cached) / 1024);
-
-	return 1;
-}
+	printf("memory(KBytes):\t%ld total\t%ld free\t%ld cached\n", (pagesize * total) / 1024, (pagesize * free) / 1024, (pagesize * cached) / 1024);
 
-int mytop_CPU()
-{
-	int cputimemode = 1;
-	getkinfo();
-	get_procs();
-	if (prev_proc == NULL)
-	{
-		get_procs();
-	}
-	print_procs(prev_proc, proc, cputimemode);
-	return 0;
+	return;
 }
 
 void get_procs()
diff --git a/yeeshell.h b/yeeshell.h
index a5907d6..8f151f1 100644
--- a/yeeshell.h
+++ b/yeeshell.h
@@ -97,8 +97,8 @@ int builtin_history(char **args);
 int builtin_mytop();
 
 /* mytop routine */
-int mytop_memory();
-int mytop_CPU();
+void mytop_memory();
+void mytop_CPU();
 void get_procs();
 void parse_dir();
 void parse_file(pid_t pid);