On Monday 22 September 2003 02:38 pm, Silambu Chelvan wrote: > Hi, > > Thanks for your information. > > The method you suggested works fine but I still have a > requirement. The control is still in the process and > could not see the command prompt. The thing is that I > should get the command prompt whenever the process is > put into background so that I can issue some other > command on the prompt.
Hi hmm, I see. You will have to actually stop the process to get the command prompt, instead of letting it sleep as I suggested earlier. You can do this by sending the SIGSTOP signal to it: #include <signal.h> #include <stdio.h> #include <sys/types.h> #include <unistd.h> void suspend() { printf("Suspending...\n"); pid_t pid = getpid(); kill(pid, SIGSTOP); /*send SIGSTOP to itself */ } ... The problem arises, when you need to start it again. The stopped process needs to be sent a SIGCONT signal, which will cause it to continue. Obviously a stopped process can't catch any signals and can't start itself again. The only way I see is to have a second process catch the signals and send the appropriate SIGSTOP and SIGCONT signals to the, lets call it main process. I hope this helps... Cheers Markus - To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs