vwhois and faces assume you have a
upas/fs mail dir called mbox, mine are 
work and home, this makes them agnostic.
Also fixed usage.

Reference: /n/sources/patch/applied/faces-vwhois
Date: Sat Jan 22 17:06:50 CET 2005

--- /sys/src/cmd/faces/main.c	Sat Jan 22 17:06:50 2005
+++ /sys/src/cmd/faces/main.c	Sat Jan 22 17:06:50 2005
@@ -597,12 +597,14 @@
 			eresized(0);
 			return;
 		}else{
-			for(i=first; i<last; i++)	/* clear vwhois faces */
-				if(ptinrect(p, facerect(i-first)) 
-				&& strstr(faces[i]->str[Sshow], "/mail/fs/mbox/XXX")){
+			for(i=first; i<last; i++){	/* clear vwhois faces */
+				char *s = strrchr(faces[i]->str[Sshow], '/');
+				if(ptinrect(p, facerect(i-first)) &&
+				    s && strstr(s, "/XXX")){
 					delface(i);
 					flushimage(display, 1);
 				}
+			}
 		}
 		break;
 	case 2:
@@ -674,7 +676,7 @@
 void
 usage(void)
 {
-	fprint(2, "usage: faces [-hi]\n");
+	fprint(2, "usage: faces [-hi] [-m mail-fs-dir]\n");
 	exits("usage");
 }
 
--- /rc/bin/vwhois	Sat Jan 22 17:06:50 2005
+++ /rc/bin/vwhois	Sat Jan 22 17:06:50 2005
@@ -1,8 +1,16 @@
 #!/bin/rc
 
-if(test -f /mnt/plumb/seemail || test -f /mnt/term/mnt/plumb/seemail){
+rfork e
+
+box=mbox
+if(! test -d /mail/fs/$box)
+	box=`{ls -p /mail/fs | grep -v ctl | sed 1q}
+if(~ $#box 0)
+	box=mbox	# we tried
+
+if(~ $#box 1 && test -f /mnt/plumb/seemail || test -f /mnt/term/mnt/plumb/seemail){
 	for(i)
-		plumb -dseemail -a 'filetype=vwhois digest='$i.$pid' mailtype=new sender='$i /mail/fs/mbox/XXX
+		plumb -dseemail -a 'filetype=vwhois digest='$i.$pid' mailtype=new sender='$i /mail/fs/$box/XXXvwhois
 }
 if not for (i){
 	echo vwhois: vwhois: vwhois: delivered `{cat /dev/user} From $i '(vwho)' >> /sys/log/mail