Путь: Toys/Other, команды версии: Ver.4     Ver.9

usage:   pwdx PID...

    Распечатать рабочий каталог процессов, перечисленных в командной строке.

usage:  pwdx PID...
    Print working directory of processes listed on command line.

#include "toys.h"

void pwdx_main(void)
{
  char **optargs;

  for (optargs = toys.optargs; *optargs; optargs++) {
    char *path = toybuf;

    sprintf(toybuf, "/proc/%d/cwd", atoi(*optargs));
    if (!readlink0(path, toybuf, sizeof(toybuf))) {
      path = strerror(errno);
      toys.exitval = 1;
    }

    xprintf("%s: %s\n", *optargs, path);
  }
}