diff --git a/toolbox/ps.c b/toolbox/ps.c
index 7c35ccb..de141fc 100644
--- a/toolbox/ps.c
+++ b/toolbox/ps.c
@@ -28,6 +28,7 @@
 #define SHOW_POLICY 4
 #define SHOW_CPU  8
 #define SHOW_MACLABEL 16
+#define SHOW_NUMERIC_UID 32
 
 static int display_flags = 0;
 
@@ -45,7 +46,7 @@
     unsigned utime, stime;
     int prio, nice, rtprio, sched, psr;
     struct passwd *pw;
-    
+
     sprintf(statline, "/proc/%d", pid);
     stat(statline, &stats);
 
@@ -67,7 +68,7 @@
         }
         cmdline[r] = 0;
     }
-    
+
     fd = open(statline, O_RDONLY);
     if(fd == 0) return -1;
     r = read(fd, statline, 1023);
@@ -89,7 +90,7 @@
     nexttok(&ptr); // pgrp
     nexttok(&ptr); // sid
     tty = atoi(nexttok(&ptr));
-    
+
     nexttok(&ptr); // tpgid
     nexttok(&ptr); // flags
     nexttok(&ptr); // minflt
@@ -129,21 +130,21 @@
     psr = atoi(nexttok(&ptr)); // processor
     rtprio = atoi(nexttok(&ptr)); // rt_priority
     sched = atoi(nexttok(&ptr)); // scheduling policy
-    
+
     tty = atoi(nexttok(&ptr));
-    
+
     if(tid != 0) {
         ppid = pid;
         pid = tid;
     }
 
     pw = getpwuid(stats.st_uid);
-    if(pw == 0) {
+    if(pw == 0 || (display_flags & SHOW_NUMERIC_UID)) {
         sprintf(user,"%d",(int)stats.st_uid);
     } else {
         strcpy(user,pw->pw_name);
     }
-    
+
     if(!namefilter || !strncmp(name, namefilter, strlen(namefilter))) {
         if (display_flags & SHOW_MACLABEL) {
             fd = open(macline, O_RDONLY);
@@ -189,7 +190,7 @@
     sprintf(tmp,"/proc/%d/task",pid);
     d = opendir(tmp);
     if(d == 0) return;
-    
+
     while((de = readdir(d)) != 0){
         if(isdigit(de->d_name[0])){
             int tid = atoi(de->d_name);
@@ -197,7 +198,7 @@
             ps_line(pid, tid, namefilter);
         }
     }
-    closedir(d);    
+    closedir(d);
 }
 
 int ps_main(int argc, char **argv)
@@ -207,13 +208,15 @@
     char *namefilter = 0;
     int pidfilter = 0;
     int threads = 0;
-    
+
     d = opendir("/proc");
     if(d == 0) return -1;
 
     while(argc > 1){
         if(!strcmp(argv[1],"-t")) {
             threads = 1;
+        } else if(!strcmp(argv[1],"-n")) {
+            display_flags |= SHOW_NUMERIC_UID;
         } else if(!strcmp(argv[1],"-x")) {
             display_flags |= SHOW_TIME;
         } else if(!strcmp(argv[1], "-Z")) {