exec, execl, execle, execlp, execv, execve, execvp, exect, or
Description. The exec subroutine, in all its forms, executes a new program in the calling process. The exec subroutine does not create a new process, but overlays the current program with a new one, which is called the new-process image.The new-process image file can be one of three file types: An executable binary file in XCOFF file format. An …