merge

rc/bin/sysupdate

@@ -1,6 +1,24 @@
 #!/bin/rc
+
+rfork n
+cd /
+
+incoming=1
+
+switch($1){
+case -h
+	echo usage: sysupdate [-i] >[1=2]
+	exit usage
+case -i
+	incoming=0
+}
+
 rfork n
 cd /
 if(! test -d .hg)
 	bind -ac /dist/plan9front /
-hg incoming && hg -v pull -u
+
+if(~ $incoming 1)
+	hg incoming
+hg -v pull -u
+