Finding the path of the program that will execute from the command line in Windows

Question

Say I have a program X.EXE installed in folder c:\\abcd\\happy\\ on the system. The folder is on the system path. Now suppose there is another program

Answer 1

Use the where command. The first result in the list is the one that will execute.

C:\> where notepad
C:\Windows\System32\notepad.exe
C:\Windows\notepad.exe

According to this blog post, where.exe is included with Windows Server 2003 and later, so this should just work with Vista, Win 7, et al.

On Linux, the equivalent is the which command, e.g. which ssh.