Add stat(1)

Makefile

@@ -86,6 +86,7 @@ SRC = \
 	sha1sum.c  \
 	sha256sum.c\
 	sha512sum.c\
+	stat.c     \
 	wc.c       \
 	who.c      \
 	yes.c

stat.1

@@ -0,0 +1,17 @@
+.TH STAT 1 sbase\-VERSION
+.SH NAME
+stat \- display file status
+.SH SYNOPSIS
+.B stat
+.RB [ \-L ]
+.RI [ file ...]
+.SH DESCRIPTION
+.B stat
+displays information about the given files or stdin if no files
+are specified.
+.SH OPTIONS
+.TP
+.B \-L
+follow links
+.SH SEE ALSO
+.IR stat (2)

stat.c

@@ -0,0 +1,73 @@
+/* See LICENSE file for copyright and license details. */
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <time.h>
+#include "util.h"
+
+static void show_stat(const char *file, struct stat *st);
+
+static void
+usage(void)
+{
+	eprintf("usage: %s [-L] [file...]\n", argv0);
+}
+
+int
+main(int argc, char *argv[])
+{
+	struct stat st;
+	int i, ret = 0;
+	int Lflag = 0;
+	int (*fn)(const char *, struct stat *);
+
+	ARGBEGIN {
+	case 'L':
+		Lflag = 1;
+		break;
+	default:
+		usage();
+	} ARGEND;
+
+	if (argc == 0) {
+		if (fstat(STDIN_FILENO, &st) < 0)
+			eprintf("stat <stdin>:");
+		show_stat("<stdin>", &st);
+	}
+
+	for (i = 0; i < argc; i++) {
+		fn = Lflag ? stat : lstat;
+		if (fn(argv[i], &st) == -1) {
+			fprintf(stderr, "%s %s: ", Lflag ? "stat" : "lstat",
+				argv[i]);
+			perror(NULL);
+			ret = 1;
+			continue;
+		}
+		show_stat(argv[i], &st);
+	}
+
+	return ret;
+}
+
+static void
+show_stat(const char *file, struct stat *st)
+{
+	char buf[100];
+
+	printf("  File: ‘%s’\n", file);
+	printf("  Size: %lu\tBlocks: %lu\tIO Block: %lu\n", (unsigned long)st->st_size,
+	       (unsigned long)st->st_blocks, (unsigned long)st->st_blksize);
+	printf("Device: %xh/%ud\tInode: %lu\tLinks %lu\n", major(st->st_dev),
+	       minor(st->st_dev), (unsigned long)st->st_ino, (unsigned long)st->st_nlink);
+	printf("Access: %04o\tUid: %u\tGid: %u\n", st->st_mode & 0777, st->st_uid, st->st_gid);
+	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_atime));
+	printf("Access: %s\n", buf);
+	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_mtime));
+	printf("Modify: %s\n", buf);
+	strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S", localtime(&st->st_ctime));
+	printf("Change: %s\n", buf);
+}