diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..27c5235
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1,5 @@
+micro-utils:
+ 8nlight (8nlight @ disroot <dot> org)
+
+Thanks:
+ builder, echo: Kind_Foxie (fedi: KindFoxie @ lamp <dot> leemon <dot> network)
diff --git a/coreutils/sleep.c b/coreutils/sleep.c
index d17ada7..38aeb82 100644
--- a/coreutils/sleep.c
+++ b/coreutils/sleep.c
@@ -15,6 +15,11 @@ int main(const int argc, const char **argv) {
 		for (;;)
 			sleep(INT_MAX);
 
-	usleep(mu_parse_duration(argv[1]));
+	unsigned long long sec = 0;
+
+	for (int i = 1; i < argc; i++)
+		sec += mu_parse_duration(argv[i]);
+
+	usleep(sec);
 	return 0;
 }
diff --git a/libmu/duration.h b/libmu/duration.h
index 82a85b3..14a491e 100644
--- a/libmu/duration.h
+++ b/libmu/duration.h
@@ -7,19 +7,40 @@ unsigned long long parse_uint(const char *str) {
 	char *p = NULL;
 
 	unsigned long long res = strtoull(str, &p, 0);
-        if (*p)
-                return 0;
+
+	/* Parse suffix */
+	if (*p) {
+		switch (p[0]) {
+			case 'm':
+				res *= 60;
+				break;
+
+			case 'h':
+				res *= 3600;
+				break;
+
+			case 'd':
+				res *= 86400;
+				break;
+
+			case 's':
+			default:
+				break;
+		}
+	}
 
 	return res;
 }
 
 unsigned long long mu_parse_duration(const char *arg) {
 	if (strchr(arg, '.')) {
-
+		/* TODO */
 	}
 
-	else
+	else {
+		/* Sec */
 		return parse_uint(arg) * 1000000;
+	}
 
 	return 0;
 }
diff --git a/libmu/make_path.h b/libmu/make_path.h
index fad705c..9c99a9f 100644
--- a/libmu/make_path.h
+++ b/libmu/make_path.h
@@ -20,6 +20,7 @@ char *mu_make_path(const char *restrict prog_name, const char *restrict src, con
 
 	else
 		snprintf(full_path, len, "%s/%s", src, dst);
+
 	return full_path;
 }
 
diff --git a/libmu/parse_mode.h b/libmu/parse_mode.h
index 612080f..66877c8 100644
--- a/libmu/parse_mode.h
+++ b/libmu/parse_mode.h
@@ -25,6 +25,8 @@ mode_t mu_parse_mode(const char *s, mode_t cur_mode) {
 		return 0;
 
 	mode = 0;
+
+	/* Default + */
 	int append = 1;
 	mode_t mask = 0;