Nokia: Internet through WIFI

http://www.dotsis.com/mobile_phone/archive/index.php/t-87441.html

http://www.microsoft.com/windowsxp/using/networking/expert/bowman_02april08.mspx

Installing TinyOS-2.x in Ubuntu intrepid (8.10)

Thank to
http://nmlaxaman.blogspot.com/2009/01/installing-tinyos-2x-in-ubuntu-intrepid.html

To Install java on your intrepid use the following command:

sudo apt-get install sun-java5-jre sun-java5-jdk sun-java5-plugin

To verify that the correct version of Java is installed the following command can be used:
java -version

This command will print the current version of java that is active. Should there be more than one version of Java be installed on the operating system, the following command can be used to list the available java versions:

update-java-alternatives -l

This command list all the available Java runtime environments on the Ubuntu system. To change from one version to another, the following command can be used:

sudo update-java-alternatives -s < JRE version >

Mostly 'JRE version' needs to be one of the folder name under /usr/lib/jvm/

Once java is installed sucessfully the follow the points below.

1) add bellow repository to your /etc/apt/sources.list. Though it is for hardy, it is working for intrepid also

deb http://tinyos.stanford.edu/tinyos/dists/ubuntu hardy main

2) with following commands you can update the apt-cache and search the required packages thin you can install the required version and all.

apt-get update
apt-cache search tinyos
apt-get install tinyos-2.1.0

3) then install python development package (headers)

apt-get install python-dev

4) Edit /opt/tinyos-2.1.0/tinyos.sh and change the CLASSPATH env-variable as bellow

CLASSPATH=$CLASSPATH:$TOSROOT/support/sdk/java/tinyos.jar:.

4) Import /opt/tinyos-2.1.0/tinyos.sh in your .bashrc; include bellow code snippet to ~/.bashrc

if [ -f /opt/tinyos-2.1.0/tinyos.sh ] ; then
. /opt/tinyos-2.1.0/tinyos.sh
fi

5) Now execut bash again or restart the terminal and chech your enviorenment with bellow command. It will check the enviorenment and report you the status. (Ignore the WORNING returned due to graphvis version)

tos-check-env

6) Lets compile the first application

cd $TOSROOT/apps/Blink
make micaz

for simulator

make micaz sim

Making a calendar of upcoming events in drupal

** Minor modification of ( http://drupal.org/node/326061 ) ** Thanks to fhsm.

Install below mentioned modules under /sites/default/modules

• CCK
• Views
• Calendar
• Date

Step 1:

Go to Administer › Content management › Content types > add content type

The following settings are largely a matter of site needs and personal preference:
Under “Submission form settings”
Title = “Event”
Body = “Details”

Under “Work flow settings”
Decide to best fit your site. It is worth considering unchecking “Promoted to front page” if you expect to have numerous small events posted.

Under “Comment settings”
Make decisions which are appropriate for your site.

Save your new event content type.

Step 2:

From the content type screen (Administer › Content management) select manage fields next to your new content type.

Add a new field

Label = “Event Date and Time”
Field name = “event_datetime”
Type = “Datetime”
Widget type = “text field with custom input format”

Save your newly created event date/time field.

Step 3:

Create your first event
Create content > Group Event
Fill out the form for your event and save it.


Step 4:

Configure your calendar view

Administer > Site building > Views

This is where the hurt started for me 6 hours ago...

Enable the Default Node view: calendar (Calendar)
Clone the default view

View name = “calendar”
View description = “Calendar of group events”

Nextshould take you to the views edit screen

Down the right side you'll see all the different types of calendar (page, block etc) just work with the default view to start (it should be where you are by default).

In the Arguments panel
Click Date: Date (node.changed)
Near the bottom of the page under Date field(s):

uncheck = Node: Update date
check Content: Event Date and Time (field_event_datetime value)

Click Update

This set the start time of your event instead of the node update time as the argument for the view.

Click Add ... for Fields, and select the following:

Content: Event Date and Time (field_event_datetime value) Default
Content: Event Date and Time (field_event_datetime value2) Default

(remove) the default item "Node: Published"

On the Filters panel click the “+” logo to add a new filter
Check = Node: Type
Click add
On the following screen
Leave operator = “Is one of” and check = Events to limit your calendar to only the event content type.

Click Update

On the Sort criteria click the “+” to add a new criteria

Check = Content: Event Date and Time (field_event_datetime value)

click Add

Save it all by clicking Save






Export and restore MySQL

phpMyAdmin can be used to export or backup MySQL databases easily. However, if the database size is very big, it probably won’t be a good idea. phpMyAdmin allows users to save database dump as file or display on screen, which involves exporting SQL statements from the server, and transmitting the data across slower network connection or Internet to user’s computer. This process slow the exporting process, increase database locking time and thus MySQL unavailability, slow the server and may simply crash the Apache HTTPD server if too many incoming web connections hogging the system’s resources.

The better way to backup and export MySQL database is by doing the task locally on the server, so that the tables’ data can be instantly dumped on the local disk without delay. Thus export speed will be faster and reduce the time MySQL database or table is locked for accessing. This tutorial is the guide on how to backup (export) and restore (import) MySQL database(s) on the database server itself by using the mysqldump and mysql utilities. There are basically two methods to backup MySQL, one is by copying all table files (*.frm, *.MYD, and *.MYI files) or by using mysqlhotcopy utility, but it only works for MyISAM tables. Below tutorial will concentrate on mysqldump which works for both MyISAM and InnoDB tables.

How to Export or Backup or Dump A MySQL Database

To export a MySQL database into a dump file, simply type the following command syntax in the shell. You can use Telnet or SSH to remotely login to the machine if you don’t have access to the physical box.

mysqldump -u username -ppassword database_name > dump.sql

Replace username with a valid MySQL user ID, password with the valid password for the user (IMPORTANT: no space after -p and the password, else mysqldump will prompt you for password yet will treat the password as database name, so the backup will fail) and database_name with the actual name of the database you want to export. Finally, you can put whatever name you like for the output SQL dump file, here been dump.sql.

The while data, tables, structures and database of database_name will be backed up into a SQL text file named dump.sql with the above command.

How to Export A MySQL Database Structures Only

If you no longer need the data inside the database’s tables (unlikely), simply add –no-data switch to export only the tables’ structures. For example, the syntax is:

mysqldump -u username -ppassword –no-data database_name > dump.sql

How to Backup Only Data of a MySQL Database

If you only want the data to be backed up, use –no-create-info option. With this setting, the dump will not re-create the database, tables, fields, and other structures when importing. Use this only if you pretty sure that you have a duplicate databases with same structure, where you only need to refresh the data.

mysqldump -u username -ppassword –no-create-info database_name > dump.sql

How to Dump Several MySQL Databases into Text File

–databases option allows you to specify more than 1 database. Example syntax:

mysqldump -u username -ppassword –databases db_name1 [db_name2 ...] > dump.sql

How to Dump All Databases in MySQL Server

To dump all databases, use the –all-databases option, and no databases’ name need to be specified anymore.

mysqldump -u username -ppassword –all-databases > dump.sql

How to Online Backup InnoDB Tables

Backup the database inevitable cause MySQL server unavailable to applications because when exporting, all tables acquired a global read lock using FLUSH TABLES WITH READ LOCK at the beginning of the dump until finish. So although READ statements can proceed, all INSERT, UPDATE and DELETE statements will have to queue due to locked tables, as if MySQL is down or stalled. If you’re using InnoDB, –single-transaction is the way to minimize this locking time duration to almost non-existent as if performing an online backup. It works by reading the binary log coordinates as soon as the lock has been acquired, and lock is then immediately released.

Syntax:

mysqldump -u username -ppassword –all-databases –single-transaction > dump.sql

How to Restore and Import MySQL Database

You can restore from phpMyAdmin, using Import tab. For faster way, upload the dump file to the MySQL server, and use the following command to import the databases back into the MySQL server.

mysql -u username -ppassword database_name < dump.sql

The import and export of MySQL database not only is important to recover the data when disaster strikes, but also provides an easy way to migrate or move to another server, such as when switching web hosting providers. However, do note that one common problem - character set encoding. Newer release of mysqldump uses UTF8 as its default charset if nothing is specified, while older versions (older than 4.1 typically) use Latin1 as default characterset. If you database charset is Latin1 and dump in UTF8 collation, the data may ends up become simply rubbish, garbled, or unreadable (frequently happen with Wordpress blog). If this case, use –default-character-set=charset_name option to specify the character set or convert the database to UTF8.