From 0e21d3939c34fef1ac3d740ea9e8fc76a6550eaf Mon Sep 17 00:00:00 2001
From: Your Name <you@example.com>
Date: Fri, 13 Oct 2023 19:33:48 +0300
Subject: [PATCH] sleep

---
 TODO              | 15 +++++++++++++++
 coreutils/sleep.c | 38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 TODO
 create mode 100644 coreutils/sleep.c

diff --git a/TODO b/TODO
new file mode 100644
index 0000000..9f4003e
--- /dev/null
+++ b/TODO
@@ -0,0 +1,15 @@
+chmod
+chown
+printf
+shuf
+id
+ln
+cp
+shred
+du
+df
+dd
+nice
+nohup
+mktemp
+test
diff --git a/coreutils/sleep.c b/coreutils/sleep.c
new file mode 100644
index 0000000..e3aab2b
--- /dev/null
+++ b/coreutils/sleep.c
@@ -0,0 +1,38 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+int main(const int argc, const char **argv) {
+	if (argc == 1) {
+		printf("sleep [num[m - minute / h - hour / d - days].. ] / [inf (infinity)]\n");
+		return 0;
+	}
+
+	if (!strcmp(argv[1], "inf"))
+		for (;;)
+			sleep(1);
+
+	unsigned int sec = 0;
+	for (int i = 1; i < argc; i++) {
+		switch (argv[i][strlen(argv[i]) - 1]) {
+			case 'd':
+				sec += atoi(argv[i]) * 86400;
+				break;
+
+			case 'h':
+				sec += atoi(argv[i]) * 3600;
+				break;
+
+			case 'm':
+				sec += atoi(argv[i]) * 60;
+				break;
+
+			default:
+				sec += atoi(argv[i]);
+		}
+	}
+
+	sleep(sec);
+	return 0;
+}