Add the following line :

$cfg['LoginCookieValidity'] = 3600 * 9;

To make the login time 9 hours.

Along with this also check session.gc_maxlifetime in php.in to be higher than or equal to this value. Otherwise session time will be the lower of the two values.

1. Open a new tab and type about:config in the Url and hit enter.
2. In filter enter margin.
3. For all terms which looks similar to print_margin_bottom , print_margin_top , print_unwritable_margin_bottom , print_extra_margin and so on, double click them and enter value of 0 or 0.0

Also change the header and footer text by filtering on header and footer and change the corresponding values.

index.php/controlller/method/param1/param2
or
/controlller/method/param1/param2

Now if the parameters contain a forward slash then you would urlencode it as :

index.php/controlller/method/par%2Fam1/param2

But opening that kind of URL would give an error : Page Not Found

This happens if AllowEncodedSlashes directive of Apache is not turned on. More Here. This directive should be turned on to allow those sort of Urls. And for codeignitor $config['permitted_uri_chars'] should also be checked to allow forward slash in uri characters.

Reference :
1. Apache Documentation

sudo a2enmod headers
sudo a2enmod expires
sudo /etc/init.d/apache2 restart

If you internal server error or ExpiresActive not allowed here

Then You have to do AllowOverride All in the configuration.

There are a few tweaks which could give significant improvement in the speed of a swing gui application.

1. Multithreading – Proper use of threads can significantly improve the applications speed and also its “perceived speed” or responsiveness.

Time consuming tasks should not be done inside an event handler since this will effect the appearance of the gui component whose event handler this is. If a lengthy task for example is done inside the event handler of a menu then the menu may stay until the task is complete or if its a button then if may freeze i.e. stay pressed until the task is complete. This results into reduced usability.

Various solutions include SwingWorker , Threads , invokeLater. E.g.Time-consuming tasks like I/O operatings , Database operations or creation of some kind of object or child window should be put in a thread. Lengthy tasks inside an event handler should be moved into a SwingWorker Thread or invokeLater so that the handler can return immediately keeping the GUI component responsive.

A Thread :

new Thread () {
    public void run () {
        //Lengthy Code
    }
}.start ();

A SwingWorker :

invokeLater :

Multithreaded applications when properly designed give even better results on multicore processors. In any case threads will definitely increase the responsiveness or perceived speed of the gui in particular.

2. JVM Switches – jvm switches can be used to modify parameters like minimum and maximum memory that a java app can use. For a complete list of jvm options look here.
Example :

java -jar -Xverify:none -Xms32m -XX:PermSize=32m -Dsun.java2d.noddraw=true application.jar

3. Creating objects before they are actually needed – Object creation is a process that takes time. For example creation of a window frame object . So a window object can be created beforehand and kept hidden. When needed it can be simply displayed by calling the show() method. This increases the speed of the application.

4. Reusing Objects – Reusing objects prevents creating them again and again and slowing down the app. This totally depends on the logic of the application how objects can be kept in memory and reused when necessary.

5. StringBuffer versus String – Strings are immutable means they cannot be changed once they are created. Hence any operation like concatenation done on a string results in creation of more string objects.
StringBuffer on the other hand is an object which can be changed and hence any operation like concatenation results into the same object being changed instead of creation of a new one.

Hence StringBuffer is faster than String. If the application uses too many Strings and string operations then StringBuffer should be used to gain speed.

Apart from these other techniques for speed gain include using native functions , AOT (Ahead of Time compilers) , JIT (Just in Time compilers) etc.

If hardware acceleration is enabled then using opengl can improve GUI speed and can be enabled using the switch :
-Dsun.java2d.opengl=true

Scriptlance has the escrow system which aims at providing sellers with protection against frauds by clients.

“The escrow system is meant for protecting the buyers and sellers from fraud”
-Scriptlance

But recently I noticed that this escrow system is totally useless. A client who paid me for a project , suddenly filed a chargeback after around 30-40 days of successful completion of project with his credit card company and scriptlance simply deducted the fee from my account.

So basically scriptlance has no protection mechanism for sellers , though it boasts of great terms and conditions. Seller protection does not exist on scriptlance. Any buyer who paid you on scriptlance using his credit card and file a chargeback say even 1 year later and you simply loose your money.

Although scriptlance boasts that it will carefully study all disputes and decide accordingly after going through all evidences.But most surprising is that even if the client wrote “Work accepted” in your private message box and paid you ; and later comes with an excuse that his account was hacked and someone else paid you , the scriptlance would happily deduct you account and pay back the client.

It is important to understand that in all transactions scriptlance happily gets its commission so it doesnt need to care about sellers. There are too many people looking for work. So it is obvious that there is no need to provide sellers with a transparent justice infrastructure. Simply cheat a seller , 10 more sellers would be there the next day. But freelancers have to understand that it is their hard earned money on which they survive. Unless you are in USA and have strong legal hands to sue scriptlance , dont expect any mercy from any one. When companies like paypal have no seller protection and scriptlance is too small to be expected anything from.

Moreover scriptlance internal management is also biased towards clients. For e.g. a client may award you a project and later on change the project specification. Now if you cancel the project for not being able to work on it due to budget vs specification constraints then , the client is allowed to leave you negative remark and amazingly scriptlance happily allows clients to do so.

So all freelancers , especially Indian freelancers please be aware!! Dont loose your hard earned money.
It would be really worthwile to think of a strong disciplined strategy to work with clients on this particular website like scriptlance.

sudo apt-get install ffmpeg

Some useful ffmpeg commands :

1. convert mpeg to flv

ffmpeg -i /path/to/movie.mpeg -ar 22050 -ab 32 -f flv -b 500000 -s 480x360 -y movie.flv

2. convert mp3 to flv

ffmpeg -i /path/to/track.mp3 -f mp3 -ab 64000 -ar 22050 myfile.mp3

3. convert mpeg to flv with mp3

ffmpeg -i /path/to/movie.mpeg -ar 22050 -ab 64000 -acodec libmp3lame -f flv -b 1000000 -s 480x360 -y movie.flv

-i denotes the input file path
-acodec – denotes the audio codec , libmp3lame in this case , can be installed from synaptic
-s the dimension of final movie e.g. 480×360
-ab audio bitrate of output e.g. 64000

libavcodec-extra-52 should also be installed for mp3 support.

sudo chmod -Rv a+w /media/disk

where directory /media/disk is the path to your partition.

Moneybookers charges 1.9% + 0.29 EU for receiving commercial payments compared to ~ 4% in paypal. In Moneybookers the payer is also charged. Moneybookers account needs verification before it can be used fully.

The first simple option is to verify address by requesting a letter. In there moneybookers would send a letter with a verification code to the account holder’s address. Upon receiving the letter the account holder must type in the code back into moneybookers. By doing this the address gets verified and limits are lifted so some extent.

Now if transactions exceed euro 1000 in a 90 day period or something similar then moneybookers requests further verification of bank account or credit card. To verify bank account a withdrawal of < $15 should be made from moneybookers to bank account. In this transaction moneybookers would send a reference number which is to be used to verify the bank account.
The $15 withdrawal method of verifying bank account doesnt seem to work for all.

The best way to verify a bank account is :
1. Contact moneybookers and send them a screenshot / scanned copy of you latest bank statement. They may verify it within 2 hours!!
2. Or send them a scanned copy of a FIRC certificate that you may have received while make smaller withdrawal.

Either way would work and bank account would be verified quickly. This would lift the limits further and enable good volume of transactions.

Another good aspect of moneybookers is that it can send dollars directly to your bank account if you have dollar as your currency in moneybookers. USE dollar as your currency in moneybookers as you would save more. If you use inr as your currency in moneybookers then when you receive a dollar payment it would be converted into rupees at higher currency conversion charges. Instead if you receive dollars directly in your bank accounts then banks would charge less for the currency conversion , giving very good forex rates. Hence KEEP you currency DOLLAR in moneybookers. Paypal doesnt have the option to withdraw dollars. It forcefully converts dollars to inr at very low forex rates.

Moneybookers also charges 2.29$ per withdrawal. So making large withdrawals with moneybookers can save money as compared to Paypal. Also there is no issue of chargebacks with moneybookers. In paypal if someone files a chargeback , then no matter what you do , you account will be debited. Sellers have no protection in Paypal. Paypal will happily pay back the payer and seller will simply stand and stare. No such problems exist with moneybookers.

When receiving dollars in Indian banks there are varying charges. For e.g. HDFC bank charges Rs. 90 + s.t. when receiving dollars whereas ICICIBank charges Rs. 600 + s.t.

So for e.g. Scriptlance > Moneybookers > HDFCBank is really a optimum , fast and low fee solution for freelancers.

To install on Ubuntu get the .deb files from :
http://sourceforge.net/projects/ngspice/files/

Look for 17.binary.64bit directory.

Download
ngspice_17.0.0-1_amd64.deb
xspice_17.0.0-1_amd64.deb

The both depend on each other so install like

dpkg -i *.deb or
dpkg -i ngspice_17.0.0-1_amd64.deb xspice_17.0.0-1_amd64.deb

Ubuntu repository has a tools called :

1. easyspice – Graphical frontend for SPICE
Install as
sudo apt-get install easyspice
Run as
easy_spice

2. gspiceui – Graphical user interface for gnucap and ngspice
Install as
sudo apt-get install gspiceui
Run as
gspiceui

3. geda – Electronics Design Software – Wikipedia Article
Install as
sudo apt-get install geda

Other tools :

1. KJwaves – Frontend for ngspice
http://ngspice.sourceforge.net/kjwaves.html

Tutorials on SPICE
http://www.seas.upenn.edu/~jan/spice/spice.overview.html
http://www.allaboutcircuits.com/vol_5/chpt_7/3.html
https://electronics.wiki.usu.edu/NGSpice
http://bwrc.eecs.berkeley.edu/Classes/icbook/SPICE/
http://www.eecg.toronto.edu/~martin/spice/part1.html

ECAD resource for LINUX
http://linas.org/linux/ecad.html