- what is linux ?
Linux: core OS = kernal + shell = application = completed OS
- Linux kernel is one of the largest open source .
- Shell = user interface: GUI, CLI
- Application: File, email, website...
- Completed OS: for window have Windows server 2000,2003,2008,2012,2016 = completed OS
Complete OS linux : Redhat, Debian, OpenSuSe.....
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