So how to extract .rar files on Linux
Go to terminal and type following command
sudo apt-get install unrar
After installing unrar on your system right click on rar file and extract them it will easily extract there.
Extract .RAR file in linux
Last week while i was working on url rewriting i face the problem. I had written the rule in .htaccess but forget to enable the mod_rewrite. Remember your .htaccess rule will not work until you enable the mod_rewrite.
Go to terminal (ctrl+Alt+T) and write the following command
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sudo apt-get install apache2 |
Once apache2 installation is complete. Write the command mentioned below to enable mod_rewrite
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sudo a2enmod rewrite |
After enable the mod_rewrite do the changes on following file
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vim /etc/apache2/sites-available/default |
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Options Indexes FollowSymLinks MultiViews AllowOverride all /* By default AllowOverride none is written so delete none and write all*/</span> Order allow,deny allow from all |
After done the changes restart the apache.
To restart apache2
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sudo /etc/init.d/apache2 restart |
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sudo a2enmod headers |
Remember to restart apache
So to restart apache2 write through terminal
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sudo /etc/init.d/apache2 restart |
Write a java program to find duplicate elements in an array. Given an array of integers, We have to write a code to find all duplicate elements in an array.
For example :
Input : arr = { 2, 5, 3, 1, 8, 7, 5, 3, 2 }
Output: {5, 3, 2}
In this tutorial, I am going to explain three approaches to find duplicate elements in an array. This question is also very important for technical interviews.