【linux】进程状态

【进程状态转移图】

PROCESS STATE CODES
   R  running or runnable (on run queue)
   D  uninterruptible sleep (usually IO)
   S  interruptible sleep (waiting for an event to complete)
   Z  defunct/zombie, terminated but not reaped by its parent
   T  stopped, either by a job control signal or because
      it is being traced
   [...]以上参考：https://unix.stackexchange.com/questions/96797/what-does-the-interruptible-sleep-state-indicate

【S态进程解释】使用命令：ps aux | grep Sl，可以看到一些处于Sl态的进程。那么这个是什么意思呢？    <    高优先级    N    低优先级    L    有些页被锁进内存    s    包含子进程    +    位于后台的进程组；    l    多线程，克隆线程  multi-threaded (using CLONE_THREAD, like NPTL pthreads do)以上参考：http://blog.csdn.net/flyingleo1981/article/details/7739490

【linux的信号】

Term：terminate the process 终止进程信号Ign：默认动作是，忽略该信号Core：默认动作是终止该进程，并打印core信息（参考core(5)）Stop：默认动作是stop the process，暂停该进程Cont：默认动作是如果进程正在被stopped，则continue the process

更多的信号详解参考：http://man7.org/linux/man-pages/man7/signal.7.html