Add logname(1)

Makefile

@@ -59,6 +59,7 @@ SRC = \
 	kill.c     \
 	link.c     \
 	ln.c       \
+	logname.c  \
 	ls.c       \
 	md5sum.c   \
 	mkdir.c    \

README

@@ -36,6 +36,7 @@ hostname
 kill
 link
 ln
+logname
 ls
 md5sum
 mkdir

TODO

@@ -13,7 +13,6 @@ find
 getconf
 join
 logger
-logname
 od
 patch
 pathchk

logname.1

@@ -0,0 +1,8 @@
+.TH LOGNAME 1 sbase\-VERSION
+.SH NAME
+logname \- return the user's login name
+.SH SYNOPSIS
+.B logname
+.SH DESCRIPTION
+.B logname
+prints the login name of the current user.

logname.c

@@ -0,0 +1,20 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdio.h>
+#include <unistd.h>
+
+#include "util.h"
+
+int
+main(int argc, char *argv[])
+{
+	char *login;
+
+	argv0 = argv[0];
+	if (argc != 1)
+		eprintf("usage: %s\n", argv0);
+	if ((login = getlogin()))
+		printf("%s\n", login);
+	else
+		eprintf("%s: no login name\n", argv0);
+	return 0;
+}