Currently moved this BLOG to http://www.egoleo.net

It is a small network packet sent to the machine. If the machine is up, an answer will be sent. The time needed to get the answer is called ping time or round-trip time.

The ping response from an IP indicates the machine is up.

Unfortunately this can be used to quickly scan an IP-range for reachable hosts.

This can be used to find potential hackable machines. If your machine doesn’t answer to pings, your chance to be seen is reduced. (That doesn’t mean your machine is more secure, the machine is just not that easy to be seen from the internet. Nothing more.)

Add the following line to your init script for the network (the name depends on the distribution you use):

echo 1 >/proc/sys/net/ipv4/icmp_echo_ignore_all

This disables ping responses.

To reenable, use the following command:

echo 0 >/proc/sys/net/ipv4/icmp_echo_ignore_all

To make this permanent set the following into /etc/sysctl.conf (if you have such a file)

net.ipv4.conf.icmp_echo_ignore_all = 1

I got into a situation where i have to customise the teaser length by View which happens to be one of the Drupal modules using node.tpl.php.

One way to vary teaser lengths is to check the current View with a modified node.tpl.php modify the output based on this

In this example a teaser of length 75 or 150 will be shown for the Views “frontpage” and “ghana_page” respectively.

I worked on this for Drupal 5 with the help of the good guys in the drupal IRC rooms, my solution is below. But this is a solution for Drupal 6 by friends on the drupal-support channel of IRC.

<div class="node<?php print ($sticky) ? " sticky" : ""; ?>">
<?php if ($page == 0): ?>
<?php else: ?>
<?php print $picture ?>
<em class="info"><?php print $submitted ?></em>
<?php endif; ?>

<?php
global $current_view;
if($teaser) {
if($current_view->name == ‘frontpage’)
{?>
<?php foreach ((array)$node->field_news_image as $item) { ?>
<div class=”field-item”><?php print $item['view'] ?></div>
<?php } ?>
<h2><a href=”<?php print $node_url ?>” title=”<?php print $title ?>“><?php print $title ?></a></h2>
<?php print $node->content['body']['#value'];
}

if($current_view->name == ‘ghana_page’)
{?>
<?php foreach ((array)$node->field_news_image as $item) { ?>
<div class=”field-item”><?php print $item['view'] ?></div>
<?php } ?>
<h2><a href=”<?php print $node_url ?>” title=”<?php print $title ?>“><?php print $title ?></a></h2>
<?php print $node->content['body']['#value'];
}

if($current_view->name == ‘africa_page’)
{?>
<?php foreach ((array)$node->field_news_image as $item) { ?>
<div class=”field-item”><?php print $item['view'] ?></div>
<?php } ?>
<h2><a href=”<?php print $node_url ?>” title=”<?php print $title ?>“><?php print $title ?></a></h2>
<?php print $node->content['body']['#value'];
}
if($current_view->name == ‘business_page’)
{?>
<?php foreach ((array)$node->field_news_image as $item) { ?>
<div class=”field-item”><?php print $item['view'] ?></div>
<?php } ?>
<h2><a href=”<?php print $node_url ?>” title=”<?php print $title ?>“><?php print $title ?></a></h2>
<?php print $node->content['body']['#value'];
}

if($current_view->name == ‘gh1′ || $current_view->name == ‘gh2′)
{?>
<?php foreach ((array)$node->field_news_image as $item) { ?>
<div class=”field-item”><?php print $item['view'] ?></div>
<?php } ?>
<h2><a href=”<?php print $node_url ?>” title=”<?php print $title ?>“><?php print $title ?></a></h2>
<?php print substr($node->content['body']['#value'], 0, 90). ‘&nbsp;’;
?><a href=”<?php print $node_url ?>” title=”read more”>read more</a><?php
}
} else {
print $content;
}
?>

As i read this news item, i was wondering when all other African leaders will do follow this. Expecially in Ghana were there is been much talk about such a thing. We always here leaders saying i already had my money or wealth before i came to power.

Koroma, i hope this will not be a nine day wonder, but to go beyond that let things work in S-Leone.

The browser is designed to be lightweight and fast, and to cope with the next generation of web applications that rely on graphics and multimedia.

Called Chrome, it will launch as a beta for Windows machines in 100 countries, with Mac and Linux versions to come.

“We realised… we needed to completely rethink the browser,” said Google’s Sundar Pichai in a blog post.

The new browser will help Google take advantage of developments it is pushing online in rich web applications that are challenging traditional desktop programs.

Just waiting to try it out.

I’m currently reconfiguring a machine on the other side of the globe, so I want to get it to work to IST instead of EST.

A quick google brought up a rather complex way of doing it which sounded really complex to me, so I refined my query and found the same solution in the Ubuntu documentation.

Simply run the following command as root (or using “su”):
sudo dpkg-reconfigure tzdata

And just follow the instructions.

No silly reboots or other craziness required.

To keep your server’s time in sync with the rest of civilisation setup a cronjob to poll an ntp server once every 24 hours:
/usr/sbin/ntpdate yourfavouritentpserveraddress

Problem solved

Adeona

The server encountered an internal error or misconfiguration and was unable to complete your request.

The problem was the .htaccess file. I deleted the .htaccess and the web server worked again.

Subsequently, I recreated the file directly on the server using vim and the server still worked, I think therefore the problem was likely to be an issue with DOS carriage returns / line feeds versus what the Linux server expected.

Several tools exist on the web to help create .htaccess files online, but generally any text editor will work. Do be sure to test your site thoroughly after making an adjustments to the .htaccess file.

And i will be updating each time somthing new comes up

For Drupal Clean URLS
http://drupal.org/node/15365

Flash Video in Drupal 5: A complete multimedia tutorial
http://www.travistidwell.com/flashvideo

zip -r foobar foobar

which will result in

foobar.zip

but what my friend wanted was having a different name for the result.

So i had to jump straight to the linux channel on IRC. below is what i learnt from there.

zip -r foo.zip bar

which results in foo.zip

what abt unziping too

unzip foo.zip

but what about unziping to have different name .

unzip foo.zip && mv foo bar