W dniu 13 paÅdziernika 2010 23:23 uÅytkownik Hatem Nassrat <hnassrat@xxxxxxxxx> napisaÅ: > 2010/10/13 MichaÅ Nazarewicz <mina86@xxxxxxx> >> 2010/10/12 Hatem Nassrat <hnassrat@xxxxxxxxx>: >> > A usecase, changing the PS1 environement var of an already running >> > bash process from another bash process. >> >> No. And even if it were possible you have no guarantees that the other >> process will reread the environment variables. > > Well the use case I gave is one where the env var gets reread for each > new prompt. I wouldn't bet on it without looking at bash's code. Bash could just copy PS1 to some internal structures and read it rather than environment variable. > Direct memory manipulation seems to be the only way I can think of, > but I do not think this is possible in userland. I was thinking maybe > there is a hidden sys call that might make this possible, like a very > hacky and unstable IPC :), yeah there is no sane reason for such a > feature but it would be cool to know if its at all possible. No such thing. Process's memory is its own (unless process wants to share it). -- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
