unix - Exec real world example -
I am looking for a real world scenerio, where using the exec only would be the available option (solve the exec exec if exec Can not be used)
I know what exec is and how it is different from the thorn, but still intrested in the real world problem which applies the use of exec command Does.
< How will one shell start another process, using without exec ? To fire another program, you must first fork () (or better, clone () nowadays, on Linux) simply asks to duplicate a process. Then you have two copies of the same process. execve () (and -l, -lp, -vp, -v folks) simply tells the current process to change completely (with a new process) Keeping the maintenance of FD, but not too much) fork () and then exec () resulting processes in one (which is usually the hair process).