In the background, there is plenty of projects going on to keep my fingers busy – keeping me firmly away from this blog – which can’t entirely be a bad thing!

Several new projects I’ve been working on lately have now gone live, most protected by non-disclosure agreements as ever, though the ones that I can tell you about:
http://www.mointernational.com
http://insight.kingstonsmithw1.co.uk/

Until next time…

http://www.wisegeek.com/how-can-i-find-the-average-color-in-a-photograph.htm

SSH command:

netstat -lptu

However, getting a list of open ports after IPTABLES and your Firewall have done their job requires a Port Scan. To get the fairest results this needs to be done from a different machine (depending on your IPTABLES/Firewall config, and what it is you’re trying to test).

SSH command:

nmap 192.0.32.10

You might also find this useful.

SSH command:

nmap -sS -p0-65535 -P0 -T4 --osscan_limit --osscan_guess --host_timeout 15m --max-retries 0 --min_parallelism 100 --max_parallelism 500 -O -oX -V 192.168.1.1

First, lets look at the maths. For those in the know, we’re essentially calculating the difference in the hypotenuse. Whichever result returns the lowest number from our data set will be the closest.

The number we need is the Square Root (√) of:
(firstLongitude-secondLongitude)*(firstLongitude-secondLongitude)
+
(firstlLatitude-secondLatitude)*(firstLatitude-secondLatitude)

Obviously, this number is useless if we have only two locations (and then we wouldn’t be interested in which was the closest anyway!), so we would loop this equation, changing the second lat/long for each location, to figure which is nearest.

In PHP we can do that like this:

<?php
 
$value = sqrt((($firstLongitude-$secondLongitude)*($firstLongitude-$secondLongitude))+(($firstlLatitude-$secondLatitude)*($firstLatitude-$secondLatitude)));
 
?>

Remember, we’d need this to loop to be useful.

And in MySQL we’d select the data like this:

ORDER BY SQRT
(((fLongitude-sLongitude)*(fLongitude-sLongitude))
+((fLatitude-sLatitude)*(fLatitude-sLatitude))) 
ASC LIMIT 1;

Hopefully this will help you get the ground work in place to make a decent start.

Constantly jumping into the Control Panel to change my network settings when I change subnet was taking awhile, and another NIC isn’t an option here, so I made these quick .bat files that I can run when I need to update things

Set-IP-DHCP.bat:

netsh interface ip set address name="Local Area Connection 2" dhcp
netsh interface ip set dns name="Local Area Connection 2" dhcp

Set-IP-Static.bat:

netsh interface ip set address name="Local Area Connection 2" source=static addr=10.99.88.3 mask=255.255.255.240
netsh interface ip set dns name="Local Area Connection 2" source=static addr=10.99.88.5  
netsh interface ip add dns name = "Local Area Connection 2" addr = 10.99.88.5

They wanted part of this website to only be accessed by one domain, and create a 404 error otherwise. I achieved this with a quick URL Rewrite:

Apache Conf:

RewriteCond %{SERVER_NAME} !^websubdomain\.somedomain\.co\.uk
RewriteRule (.*) - [R=404,L]

Cron command:

0 7 * * *   wget -O - -q -t 1 http://www.example.net/path-to-file/file.php

or we can use Lynx if need-be.

Cron command:

0 7 * * * /usr/bin/lynx --source http://www.example.net/path-to-file/file.php

If the file isn’t on the net, you can also run it by calling PHP direct…

Cron command:

0 7 * * * /usr/local/bin/php -q /htdocs/www/x.php

Remember to check your path to PHP. Hopefully this will help someone looking for the same thing.