From 74ec67b827826c2ea64786274edba174c145c2de Mon Sep 17 00:00:00 2001
From: Alan Cox <alan@linux.intel.com>
Date: Tue, 30 Dec 2014 11:43:12 +0000
Subject: [PATCH] utils: Add who from ELKS

---
 Applications/util/Makefile |  1 +
 Applications/util/who.c    | 42 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 Applications/util/who.c

diff --git a/Applications/util/Makefile b/Applications/util/Makefile
index c71caf00..af2158fd 100644
--- a/Applications/util/Makefile
+++ b/Applications/util/Makefile
@@ -88,6 +88,7 @@ SRCS  = banner.c \
 	uue.c \
 	wc.c \
 	which.c \
+	who.c \
 	whoami.c \
 	write.c \
 	xargs.c \
diff --git a/Applications/util/who.c b/Applications/util/who.c
new file mode 100644
index 00000000..e97a75af
--- /dev/null
+++ b/Applications/util/who.c
@@ -0,0 +1,42 @@
+/*
+ * who.c
+ *
+ * Copyright 1998 Alistair Riddoch
+ * ajr@ecs.soton.ac.uk
+ *
+ * This file may be distributed under the terms of the GNU General Public
+ * License v2, or at your option any later version.
+ */
+
+/*
+ * This is a small version of who for use in the ELKS project.
+ * It is not fully functional, and may not be the most efficient
+ * implementation for larger systems. It minimises memory usage and
+ * code size.
+ */
+
+
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <utmp.h>
+
+void main(int argc, char *argv[])
+{
+    register struct utmp * entry;
+    char * timestr;
+
+    setutent();
+    while ((entry = getutent()) != NULL)
+	if (entry->ut_type == USER_PROCESS) {
+	    timestr = ctime(&entry->ut_time);
+	    timestr[strlen(timestr) - 1] = '\0';
+	    printf("%s	tty%c%c	%s %s\n", entry->ut_user,
+			entry->ut_id[0],
+			entry->ut_id[1] ? entry->ut_id[1] : 0,
+			timestr,
+			entry->ut_host);
+	}
+    exit(0);
+}
-- 
2.34.1