Specializing in expert technology advice and implementation in NorthEast Florida

.bashrc functions to do repetitive tasks

A cool thing to do if you find yourself doing something LOTs of times:

Edit your ".bashrc" (in your home directory)
and create your personalised script as follows:

wch()
{
sudo chmod 774 $1 $2 $3 $4;
sudo chown www-data.www-data $1 $2 $3 $4;
}

Then you can execute the command "wch" with parameters to execute the commands you want. Very cool...

Using ImageCache and positioning in node output (Drupal)

See "Joe's" comment here: http://drupal.org/node/139915

Go to [Content management] > [Content types] > [Manage fields] and make sure yiour image field is LIGHTER than [body] eg -2
this will force the image above your teaser but not yet inline

then go to modules > system > defaults.css

and add

.field-type-image img {
float: right;
margin-left: 1em;
border: 0px solid red;
}

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Enabling TELNET in Windows 7

It turns out that by default TELNET was not packaged with Windows 7. Apparently this was also true for Windows Vista.
Telnet is known to be insecure and so by default, Microsoft now DISABLES any likely security holes. Whenever you can, you should always use SSH.
That being said, you can enable Telnet this way:

  1. Start
  2. Control Panel
  3. Programs And Features
  4. Turn Windows features on or off
  5. Check Telnet Client
  6. Hit OK

After that you can start Telnet via the "CMD" - Command Prompt.

how to build a DRUPAL Ubuntu Server from scratch

Fantastic writeup of how to build a DRUPAL Ubuntu Server from scratch:
http://2bits.com/articles/installing-a-dedicated-server-or-a-vps-with-ub...
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Microsoft SQL Server version checking

You can run the following SQL Query to determine the running Version of SQL Server 2005:
"SELECT SERVERPROPERTY('productversion'), SERVERPROPERTY ('productlevel'), SERVERPROPERTY ('edition')"

Release Sqlservr.exe
RTM 2005.90.1399
SQL Server 2005 Service Pack 1 2005.90.2047
SQL Server 2005 Service Pack 2 2005.90.3042
SQL Server 2005 Service Pack 3 2005.90.4035

If you get an error message that "Agent XPs" have not been enabled, you can execute these commands in the SQL Management Studio:

DNS Event ID 6702

I get these errors regularly in the Windows Server 2003 Event Log:
Event Type: Error
Event Source: DNS
Event Category: None
Event ID: 6702
Date: 12/31/2009
Time: 4:37:05 PM
User: N/A
Computer: XXXX
Description:
DNS server has updated its own host (A) records. In order to ensure that its DS-integrated peer DNS servers are able to replicate with this server, an attempt was made to update them with the new records through dynamic update. An error was encountered during this update, the record data is the error code.

RFC 1918 - Private IPV4 Addresses

The Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of the IP address space for private internets:

  • 10.0.0.0 - 10.255.255.255 (10/8 prefix)
  • 172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
  • 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)

BGP Prefix List (for route filtering)

To filter routes 41.0.0.0 and 42.0.0.0 from bgp route declarations outgoing from RTR_SYDNEY :

RTR_SYDNEY(config)#ip prefix-list FILTER1 deny 41.0.0.0/8
RTR_SYDNEY(config)#ip prefix-list FILTER1 deny 42.0.0.0/8
RTR_SYDNEY(config)#ip prefix-list FILTER1 permit 0.0.0.0/0 le 32
RTR_SYDNEY(config)#router bgp 777
RTR_SYDNEY(config-router)#neighbor 172.12.123.1 prefix-list FILTER1 out

RTR_SYDNEY#clear ip bgp * soft

IPV6 Address Space - It's BIG

I thought this was an interesting analogy for the IPV6 Address Space:
From: http://www.cedmagazine.com/ipv6-a-catalyst-for-service-growth.aspx

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Google Chrome OS ho-hum? I think not.

Article: "Google Chrome: The Official Start of the Cloud Era"
Author Lawrence Walsh says: "Google Chrome is being dismissed by competitors and analysts, but it may just be the official beginning of the cloud computing era by freeing users from big, heavy PCs and operating systems."

I commented on his article as follows:

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