I have a query that is about android application based mobile. actually android is so popular in mobiles and its w using sell cmd also UNIX is also support shell files. So it is a operating system of UNIX. But i am not sure please help me.
No. These devices are not unix either - Other smart devices with Linux inside - Linux For Devices Articles - Linux for Devices.
No, Android is not a Unix operating system.
I wouldn't even call it Linux as it's usually known.. it uses a Linux core but the usual Linux environment is not available.
Linux is the "kernel" and Android is built on a Linux kernel... you can log into it fairly easily even with a non "rooted" phone and get a busybox shell... with a rooted phone you can be the root user and then you can modify things much like you would on many other Linux based appliance-like devices.