add more service examples

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

examples/var_service/nmeter/run

@@ -1,21 +1,20 @@
 #!/bin/sh
 
-# Since per-process /proc/net/ (-> /proc/self/net/) appeared,
-# we need to be root
-user=root
-tty="/dev/tty9"
-
-chmod -R a+X . # or else env will moan
-chown $user: $tty # devfs made happy
-
-cmd="nmeter '%t %c x %x p%p f %f b %b m %m if%[nif]'"
-
 exec >/dev/null
 exec 2>&1
 exec </dev/null
 
+# Since per-process /proc/net/ (-> /proc/self/net/) appeared,
+# we need to be root
+user="root"
+tty="/dev/tty9"
+cmd="nmeter '%t %c x %x p%p f %f b %b m %m if%[nif]'"
+
+chmod -R a+X . # or else env will moan
+chown "$user": "$tty" # devfs made happy
+
 eval exec \
-setuidgid "$user" \
 env - PATH="$PATH" \
+setuidgid "$user" \
 <"$tty" >"$tty" 2>&1 \
 $cmd