仅列出处于挂起模式的进程

Question 1

的输出ps包括状态：

$ ps aux | head -n2
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0 200892  5132 ?        Ss   Mar04   0:20 /sbin/init

该STAT列表示流程的状态。可以是以下之一（来自man ps）：

Here are the different values that the s, stat and state output
specifiers (header "STAT" or "S") will display to describe the state of a process:

           D    uninterruptible sleep (usually IO)
           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

因此，您正在寻找状态显示为的进程T。要仅查看这些进程，您可以解析ps它们的输出：

ps aux | awk '$8=="T"'

有时，可以向状态字段添加其他字符（取决于您使用的选项），因此这可能是一种更安全的方法：

ps aux | awk '$8~/T/'

Answer

的输出ps包括状态：

$ ps aux | head -n2
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.0 200892  5132 ?        Ss   Mar04   0:20 /sbin/init

该STAT列表示流程的状态。可以是以下之一（来自man ps）：

Here are the different values that the s, stat and state output
specifiers (header "STAT" or "S") will display to describe the state of a process:

           D    uninterruptible sleep (usually IO)
           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

因此，您正在寻找状态显示为的进程T。要仅查看这些进程，您可以解析ps它们的输出：

ps aux | awk '$8=="T"'

有时，可以向状态字段添加其他字符（取决于您使用的选项），因此这可能是一种更安全的方法：

ps aux | awk '$8~/T/'

Question 2

您可以使用 bashjobs内置命令查看后台或暂停的作业的状态，例如

Ctrl启动并后台运行一个进程；使用+启动并暂停第二个进程Z

$ sleep 100 & sleep 200
[1] 12444
^Z
[2]+  Stopped                 sleep 200

检查所有作业的状态

$ jobs
[1]-  Running                 sleep 100 &
[2]+  Stopped                 sleep 200

仅检查已暂停作业的状态

$ jobs -s
[2]+  Stopped                 sleep 200

请参阅JOB CONTROL部分man bash或 shell 的在线帮助help jobs。

Answer