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Ruby on Rails – Error installing mysql2: Failed to build gem native extension – Ubuntu Linux

      This is a very common issue where we get error “Error installing mysql2: Failed to build gem native extension” while installing mysql2 gem in Rails(in Ubuntu Linux OS). The problem is due to missing libmysql(from MYSQL) file. Linux Solution:       To solve the issue install the compnents libmysql-ruby and libmysqlclient-dev using the… Read More »

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Moto E/Moto G/Moto X – Stuck in Circle Blue M Screen – Solved

           I personally own Moto E and all of a sudden the mobile restarted and got stuck in Blue M screen after the boot animation screen. This problem was also faced by the people using Moto G and Moto X. I restarted the mobile few times and there was no improvement.… Read More »

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Linked List in C- Insert Node at Start of the Linked List

DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Try DATA STRUCTURES IN C – LINKED LIST (20 PROGRAMS) Linked List in C- Insert Node at Start of the Linked List :            Linked List is a data structure which is used to store and retrieve data. Consider the following image.  … Read More »

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Monitor Elasticsearch Servers with Shell Script – E-Mail Notification

           The following shell script can be used to monitor Elasticsearch servers. The basic idea is that the server (IP:9200) will respond with a color code(Green, Red and Yellow). We use the color code to know the status of the server and notify the users through configured E-Mail addresses. An E-Mail… Read More »

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Raspberry Pi – A credit card sized computer for 25$

              Have you ever heard of a computer which is sized like a floppy disk? Of-course we already have Intel’s NUC, Sapphire’s VS8 etc. But are they really as small like a floppy disk? No, they are not.Here we have such a small computer which is  85.60mm x 56mm x 21mm in size… Read More »

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