Restoring AWS System after messed up

Rushabh Gedam — Tue, 07 Sep 2021 16:15:13 +0000

While many of developers are focusing on RAD (Rapid Application Development), preferable to go with AWS systems.
Well, this is pretty much best solutions at ever.
But in case if you've messed up with the firewall or permissions of the filesystem, then I got something for you.
Recently I stuck in scenario where I misconfigured the Firewall & changed the OS level files User Group.
But fortunately I found a solution,
Here it is.

For a case where I set the permissions for /home/ubuntu to 777, my OS is Ubuntu 18.06

Go to EC2 Instances
Stop the instance with which you've played & dumped it down.
Right Click on the instance & go to Edit User Data
Paste the below command

bootcmd:
- cloud-init-per always fix_broken_ufw_1 sh -xc "sudo chown root:root /home >> /var/tmp/svc_$INSTANCE_ID 2>&1 || true" 
- cloud-init-per always fix_broken_ufw_1 sh -xc "sudo chmod 755 /home >> /var/tmp/svc_$INSTANCE_ID 2>&1 || true"
- cloud-init-per always fix_broken_ufw_1 sh -xc "sudo chown ubuntu:ubuntu /home/ubuntu -R >> /var/tmp/svc_$INSTANCE_ID 2>&1 || true"
- cloud-init-per always fix_broken_ufw_1 sh -xc "sudo chmod 700 /home/ubuntu /home/ubuntu/.ssh >> /var/tmp/svc_$INSTANCE_ID 2>&1 || true"
- cloud-init-per always fix_broken_ufw_1 sh -xc "sudo chmod 600 /home/ubuntu/.ssh/authorized_keys >> /var/tmp/svc_$INSTANCE_ID 2>&1 || true"

In brief
Consider your

- cloud-init-per always fix_broken_ufw_1 sh -xc "your entire command with sudo as you do it on normal ubuntu >> /var/tmp/svc_$INSTANCE_ID 2>&1 || true"

Just start & boom.

Which language to learn first ?

Rushabh Gedam — Sun, 11 Apr 2021 07:08:40 +0000

Well, every newbie in IT industry asking which language to study in order to get paid with well digits.

Every experienced developer is guiding them as per their convenience, let's consider John is an experienced developer & Mark is a newbie. Now before stepping in Mark started surveying about industry & asking everyone which language to study to hold the position in industry.

Let's say if John is an Android Developer, in such scenario John advises mark to study about Java or Kotlin.

If John is an iOS Developer, in such scenario John advises mark to study about Swift or Objective C.

If John is the Laravel/Codeignitor Developer, in such scenario John advises mark to study about PHP.

If John is the Web Front-End Developer, in such scenario John advises mark to study about HTML, CSS, BootStrap, etc.

If John is the AI Developer or Game developer using Unity he'll guide the same as technologies he is currently using.

But since it's JS stands everywhere & won't stab you in the technology limit I would like to tell you that learn JS First.

If you are willing to go in Web app development try AngularJS, ReactJS, etc.

If you are willing to go in Mobile app development try Ionic Cordova, angular-cordova, React Native(Most loved & preferable), etc.

If you are willing to go in Backend development try NodeJS, ExpressJS, mongoDB, etc.

If you are willing to go in Games Development development try GDevelop, melonJS, ImpactJS, BabylonJS, etc.

If you are willing to go in Games Development development try GDevelop, melonJS, ImpactJS, BabylonJS, etc.
& so on.

Try keeping hands on JS, Because JS Stands Everywhere !

DEV Community: Rushabh Gedam

Restoring AWS System after messed up

Which language to learn first ?