Linux下如何查杀stopped进程详解

前言

在linux系统下面，top命令可以查看查看stopped进程。但是不能查看stopped进程的详细信息。那么如何查看stopped 进程，并且杀掉这些stopped进程呢？ 

 ps -e j | grep t 

stopped进程的stat状态为t，一般而言,进程有下面这些状态码:

               d    uninterruptible sleep (usually io)

               i    idle kernel thread

               r    running or runnable (on run queue)

               s    interruptible sleep (waiting for an event to complete)

               t    stopped by job control signal

               t    stopped by debugger during the tracing

               w    paging (not valid since the 2.6.xx kernel)

               x    dead (should never be seen)

               z    defunct ("zombie") process, terminated but not reaped by
                    its parent

       for bsd formats and when the stat keyword is used, additional
       characters may be displayed: 

               <    high-priority (not nice to other users)

               n    low-priority (nice to other users)

               l    has pages locked into memory (for real-time and custom
                    io)

               s    is a session leader

               l    is multi-threaded (using clone_thread, like nptl
                    pthreads do)

               +    is in the foreground process group

一般较常见的是5种状态码:

     d 不可中断 uninterruptible sleep (usually io)

     r 运行 runnable (on run queue)

     s 中断 sleeping

     t 停止 traced or stopped

     z 僵死 a defunct (”zombie”) process 

所以，可以用下面命令ps -a -ostat,ppid,pid,cmd | grep -e '^[t]' 查看stopped的进程信息。如下所示：

# ps -a -ostat,ppid,pid,cmd | grep -e '^[t]'
 
t  6777 8635 more alert_pps.log
t  6777 9654 tail -60f alert_pps.log
t  6777 10724 top
# kill -9 8635
# ps -a -ostat,ppid,pid,cmd | grep -e '^[t]'
t  6777 9654 tail -60f alert_pps.log
t  6777 10724 top
# kill -9 9654
# kill -9 10724

总结

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