diff -ru procps-ng-3.3.14/proc/whattime.c procps-ng-3.3.14-bsfc/proc/whattime.c
--- procps-ng-3.3.14/proc/whattime.c	2018-03-03 02:11:55.690869414 -0500
+++ procps-ng-3.3.14-bsfc/proc/whattime.c	2018-05-31 19:16:01.789935336 -0400
@@ -43,7 +43,7 @@
 
 char *sprint_uptime(int human_readable) {
   struct utmp *utmpstruct;
-  int upminutes, uphours, updays, upweeks, upyears, updecades;
+  int upseconds, upminutes, uphours, updays, upweeks, upyears, updecades;
   int pos;
   int comma;
   struct tm *realtime;
@@ -87,12 +87,13 @@
   uphours = upminutes / 60;
   uphours = uphours % 24;
   upminutes = upminutes % 60;
+  upseconds = uptime_secs - (uphours * 60 * 60) - (upminutes * 60);
 
   if (!human_readable) {
     if(uphours)
-      pos += sprintf(buf + pos, "%2d:%02d, ", uphours, upminutes);
+      pos += sprintf(buf + pos, "%2d:%02d:%02d, ", uphours, upminutes, upseconds);
     else
-      pos += sprintf(buf + pos, "%d min, ", upminutes);
+      pos += sprintf(buf + pos, "%dm%02ds, ", upminutes, upseconds);
 
 /* count the number of users */
 
@@ -151,6 +152,12 @@
                      upminutes != 1 ? "minutes" : "minute");
       comma += 1;
     }
+
+	if (upseconds) {
+	  pos += sprintf(buf + pos, "%s%d %s", comma > 0 ? ", " : "", upseconds,
+	  				 upseconds > 1 ? "seconds" : "second");
+	  comma += 1;
+	}
   }
 
   return buf;
Only in procps-ng-3.3.14-bsfc/proc: whattime.c.orig