Change process name in Linux

Question

I\'m on Linux and I am forking/execing a new process out of my C spawn application. Is it possible to also change the naming of these new child processes?

I want to

Answer 1

This is a non-portable hack:

/*
 * Sets process title, truncating if there is not enough space, 
 * rather than causing memory corruption.
 */
void set_title_np(int argc, char **argv, const char *title) {
    // calculate available size
    size_t space = 0;
    for (int i = 0; i < argc; i++) {
        size_t length = strlen(argv[i]);
        space += length + 1; // because of terminating zero 
    }
    memset(argv[0], '\0', space); // wipe existing args
    strncpy(argv[0], title, space - 1); // -1: leave null termination, if title bigger than space
}