>[оверквотинг удален]
> JS and .Net. But Python and PHP are my favorite programming
> languages. Currently I am working on Windows 7, 10 and 11
> operating systems. Now I am looking to work in Linux OS
> can anyone suggest some Online Linux Terminal and is it important
> to use it with Linux OS?
> Is installing Linux is easy as other OS like window 7, 10
> and 11.
> Waiting for some positive responses, would be a great support in this
> regard.
> Thanks

1. If you need to work online, buy a VPS on Hetzner or OVH with Ubuntu.
2. If you are ready to go with VirtualBox on your local computer or replacing your current OS, installing Ubuntu or its derivatives is not very complicated, and there are lots of guides on the internets, text or video ones.

If you don't mind, I'll warn you that developing for Microsoft .NET platform is a bit fishy using linux machine. If your applications do need Windows Forms or other Windows-specific libraries, it wouldn't be possible. If they aren't, you can try Mono (multiplatform free and open source .NET reimplementation with runtime included). And yet one more thing: I don't know any way to run ASP.NET MVP or other web-based .NET applications which are meant to be run with IIS. Think twice.