I have written a c program named xyz.c I able to see the preprocessor out xyz.i by u
 

I have written a c program named xyz.c

Iam able to see the preprocessor out xyz.i by using the command

gcc -E xyz.c>xyz.i

Iam also able to see the compiler output xyz.s by using the command
gcc -S xyz.c

Iam also able to see the Assembler output xyz.o by using the command
gcc -c xyz.c

I want to see xyz.exe after linking. So what exact command i have to give for linking to see this file

Are you sure you want to see xyz.exe? The normal output from gcc would be xyz

a .exe binary is a MICROSOFT WINDOWS program

if you want a LINUX source code to make a WINDOWS exe
then install MinGW on Windows 7 and build a Microsoft exe on windows

Your question is ambiguous.
If you want the binary to be named "xzy.exe"
gcc -o xyz.exe xyz.c

If you want to explore the binary, have a look at the objdump and readelf commands after linking.