InfoDepot Wiki

View Logfile in Browser without Local Syslogd (

1,124pages on
this wiki
Add New Page
Talk0 Share

Your here: .../.../DD-WRT Tutorials/Useful Scripts/Miscellaneous Scripts/View Logfile in Browser without Local Syslogd (

  • View the last 1000 lines from your router's logfile in your browser without a locally running syslogd (i.e. Kiwi)

First Method: Script Generated Live-content

Initial post in German forum: SOLVED: messages (logdatei) formatiert über browser aufrufen)

echo '<HTML><HEAD><TITLE>Logfile</TITLE></HEAD>'
echo '<BODY>'<br />nvram get router_name
echo ' Logfile:<br><pre>'
/usr/bin/tail -n 1000 /var/log/messages
echo '</BODY></HTML>'

To use this script you first need to enable syslog on your router without stating an IP. Then the log will be saved in /var/log/messages. You can do this under Administration->Services and then scroll down to the "System Log" section. Click "Enable" and leave "Remote Server" empty. After you saved the script under /tmp/www/ as "" you must mark it as executable with "chmod +x /tmp/www/". You can do that by saving the following in your startup script:

echo -en "#!/bin/sh\necho '<HTML><HEAD><TITLE>Logfile</TITLE></HEAD>'\necho '<BODY>'\nnvram get router_name\necho ' Logfile:<br><pre>'\n/usr/bin/tail -n 1000 /var/log/messages\necho '</BODY></HTML>'" > /tmp/www/

To view the log in your browser point it to "http://<routerip>/user/"

It appears that the above method doesn't work under some versions of v24 as shell scripts need to be created in the cgi-bin folder in order for the webserver to execute them.

If you find the previous startup script doesn't work, try the following:

mkdir /tmp/www/cgi-bin
echo -en "#!/bin/sh\necho '<HTML><HEAD><TITLE>Logfile</TITLE></HEAD>'\necho '<BODY>'\nnvram get router_name\necho ' Logfile:<br><pre>'\n/usr/bin/tail -n 1000 /var/log/messages\necho '</BODY></HTML>'" > /tmp/www/cgi-bin/
chmod +x /tmp/www/cgi-bin/

and use http://<routerip>/user/cgi-bin/ to access it.

Second Method: Static Generated HTML

Note that it is reported that script-generated content will not be delivered by the web server in v24-RC4 and v24-RC5, maybe other versions are affected too (see User-HTML (skript generiert) funzt nicht :( in the German forum). If you just get an empty page if using the first method you may use this workaround:

echo -en "#!/bin/sh\nrm /tmp/www/syslog.html\necho '<HTML><HEAD><TITLE>Logfile (Generated: ' >> /tmp/www/syslog.html\ndate >> /tmp/www/syslog.html\necho ')</TITLE></HEAD><BODY>' >> /tmp/www/syslog.html\nnvram get router_name >> /tmp/www/syslog.html\necho ' Logfile:<br><pre>' >> /tmp/www/syslog.html\n/usr/bin/tail -n 1000 /var/log/messages >> /tmp/www/syslog.html\necho '
</BODY></HTML>' >> /tmp/www/syslog.html" > /tmp/www/

chmod +x /tmp/www/ </pre>

Save the above code to your startup script and create a cron job for it. To generate a HTML log every 15 minutes you could use this job:

*/15 * * * * root /tmp/www/

Your router's syslog is now available on http://<routerip>/user/syslog.html and will be updated every 15 minutes (or whatever you've set in the cron job).

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.