问有没有办法让一个正在运行的进程处于D状态或Z状态？

EN

sudo cat $(mount | awk '$3 == "/" { print $1 }') > /dev/null
# Then run "top" command,
# Sometimes, you'll see "cat" process in "D" state, most of the time in "R" state

#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>

int main ()
{
  pid_t child_pid;

  child_pid = fork ();
  if (child_pid > 0) {
    sleep (60);
  }
  else {
    exit (0);
  }
  return 0;
}

gcc -o zombie zombie.c
./zombie