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How can I extend partition in virtual box ?

It's quite easily for extend partition in virtual box. You can follow step by step to complete your task. In example I'm using CentOS Power off your CentOS virtual machine Go into the directory of your *.vdi image. If you don't know where it is, look at your Virtualbox Manager GUI  virtualbox -> settings -> storage -> *.vdi -> location  e.g. mine is located under  ~/VirtualBox VMs/CentOS7/CentOS.vdi Back up your image just in case anything goes wrong $ cp CentOS7.vdi CentOS7.backup.vdi Resize your virtual storage size, e.g. 200 GB $ VBoxManage modifyhd CentOS7.vdi --resize 204800 Power on your CentOS virtual machine, issue $ sudo fdisk -l    Device Boot       Start          End       Blocks    Id   System     /dev/sda1    *    ...
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How I cut my AWS bill by 90% by going serverless

In short, I was able to move my side project — an Express.JS application — from AWS Elastic Beanstalk to Lambda+APIG. It took me less than a day and it resulted in a ~90% reduction of costs. This could be beneficial for any non-mission critical application (or environment), and I believe that it could be a game-changer for side projects and small endeavors. First of all, for full disclosure — the application in question is a  side project and not subject to any service-level agreement or performance requirements. It is a web site called  libhive . libhive scans the code in the  npm  registry and finds examples of packages using other packages. It is built in Node.JS with ExpressJS, and backed by DynamoDB. libhive gets a modest 50–150 visits daily. A couple of months ago, after I decided not to pursue this project any longer, I still wanted to keep it alive — but to minimize the maintenance costs. The site was running on Elastic Beanstalk running 2 micro insta...
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