Call ulimit -n to increase file descriptors in examples/snac_netbsd.

examples/snac_netbsd

@@ -31,4 +31,8 @@ snac_precmd() {
 }
 
 load_rc_config $name
-run_rc_command "$1"
+
+# increase the number of file descriptors
+ulimit -n 1024
+
+run_rc_command "$1"