1 files changed, 28 insertions, 0 deletions
diff --git a/errno.c b/errno.c
new file mode 100644
index 0000000..7cfbee9
--- /dev/null
+++ b/errno.c
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-3.0+ */
+/*
+ * Copyright (C) 2022, 2023 Ferass El Hafidi <vitali64pmemail@protonmail.com>
+ */
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#define REQ_PRINT_USAGE /* Require print_usage() from common.h */
+#define DESCRIPTION "Give information about error codes."
+#define OPERANDS    "code"
+#include "common.h"
+
+#ifdef FASESBOX
+int errno_main(int argc, char *argv[]) {
+#else
+int main(int argc, char *argv[]) {
+#endif
+	long int error_code = 0;
+	setvbuf(stdout, NULL, _IONBF, 0);
+	if (argc == 2) {
+		error_code = strtol(argv[1], NULL, 10);
+		printf("errno %ld: %s\n", error_code, strerror(error_code));
+	}
+	else return print_usage(argv[0], DESCRIPTION, OPERANDS, VERSION);
+	return 0;
+}