Asus RT-N16 Manual - Page 8

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#!/bin/bash

rm /opt/tmp/nvramshow

nvram show >> /opt/tmp/nvramshow

i=0

while read -r line; do

val=${line#*=}

var=${line%*=}

if [[ "$val" == "" ]]; then

nvram unset $var

i=`expr $i + 1`

if [[ $i == 50 ]]; then

sleep 2

i=0

done < /opt/tmp/nvramshow

exit 0

Simpler version: Instead of outputting to a file to check if each var is empty, use grep to find empty vars:

1. Check current size and empty var count

root# nvram show

size: 30273 bytes (2495 left)

414

2. Clean up

root# for line in `nvram show

•

This can be saved as a startup script. Alternatively, to avoid further NVRAM usage, save to JFFS or

USB with a JFFS partition. Save your script to /jffs/etc/config, give it a .startup extension, make it

executable, then DD-WRT will run it after every boot.

3. Check again....

root# nvram show

size: 24307 bytes (8461 left)

4. Saved almost 6K

root# echo "$((8461 - 2495))"

5966

Performance

This is without SFE accelerated NAT.

Test Description

WAN - LAN

LAN - WAN

Total Simultaneous

Max. Connections

Firmware Version

Performance

Asus_RT-N16

| grep =$ | wc -l

| grep =$ `; do var=${line%*=}; nvram unset $var; done

| grep =$ | wc -l

Throughput - (Mbps)

141.1

143.3

155.9

200

1.0.0.6