Exporting SSL certificates of a website

Exporting a SSL certificate can be a rather challenging if you are a mac user since the browsers such as chrome does not provide that option. Instead you can only view the certificate.

This is the work around I found.

command - echo -n | openssl s_client -connect www.linkedin.com:443 | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /Users/dinukshakandasamanage/Documents/$SERVERNAME.cert

echo -n gives a response to the server, so that the connection is released.

This will save the certificate to /Users/dinukshakandasamanage/Documents/$SERVERNAME.cert. You can define the path you want the certificate to be saved.

sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' will extract only the necessary content that is preferred by the key stores.

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Fixing 'java RMI - ConnectException: Operation timed out' in WSO2 Enterprise Integrator 6.4

If you ever come across the below exception when running WSO2 Enterprise Integrator 6.4, here is the fix. This error occurs when you have multiple IP addresses from different networks configured in your etc/hosts as below. 10.xxx.x.xxx localhost 192.xxx.x.xxx localhost So simply, removing the unnecessary one and leaving the one of the network that you are currently connected to should resolve this issue. 10.xxx.x.xxx localhost

SIMPLE BLACKJACK GAME IN JAVA (CONSOLE)

import java.util.Scanner; class BlackJack{ public static void main(String[] args) { int player_random1 = 100; int player_random2 = 100; while(player_random1 >= 12 || player_random2 >= 12 || player_random1 < 3 || player_random2 <3) { player_random1 = (int)(Math.random()*100); player_random2 = (int)(Math.random()*100); } int player_total = player_random1 + player_random2; System.out.println("You get a "+player_random1+" and a "+player_random2); System.out.println("Your total is "+player_total); if(player_total==21) { System.out.println("Blackjack! Player Wins!"); return; } System.out.println(); int dealer_random1 = 100; int dealer_random2 = 100; while(dealer_random1 >= 12 || deale

Calculator using PHP

This Calculator model will take inputs from the Number 1 and Number 2 fields and when the user clicks on the relevant operator the result will be displayed in the Results field. For log10(), to radian, to degree, sin, cos, tan operations only require one input. Hence, the user is instructed to input the values to the 1st field only. First, before proceeding with the calculation, we need to obtain the values from the text boxes. For that we should include all the form elements inside a form. The result is directed to the same page. Therefore we will use the form action as $_SERVER['PHP_SELF'] and the method as post. Next, we can obtain the values in the text boxes. $_POST[' form_element_name '] will give you the value of the respective element. We can write the php code as follows (in the <head>) to obtain the value from Number 1 and Number 2 fields. <?php $num1=$_POST['num1']; //num1 is the name of th

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