![[EdCert previous]](../../../edcert/images/prev.gif)
![[EdCert next]](../../../edcert/images/next.gif)
![[EdCert top]](../../../edcert/images/top.gif)
Exactly. The shell is a command interpreter. When a user types in a command the shell first checks to see if that command is internal. If the command is internal to the shell then the shell can execute it. If the command is not internal the shell looks for a program on the disk with the command's name and runs it.