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MikeCoder translating... 在 Linux 如何查看一个进程的运行时间
Linux how long a process has been running
===================== =====================
![](http://s0.cyberciti.org/images/category/old/linux-logo.png) ![](http://s0.cyberciti.org/images/category/old/linux-logo.png)
>I‘m a new Linux system user. How do I check how long a process or pid has been running on my Ubuntu Linux server? >我是一个 Linux 系统的新手。我该如何在我的 Ubuntu 服务器上查看一个进程或者根据一个进程 id 来查看他已经运行的时间？
You need to use the ps command to see information about a selection of the active processes. The ps command provide following two formatting options: You need to use the ps command to see information about a selection of the active processes. The ps command provide following two formatting options:
你需要使用 ps 命令来查看关于一组正在运行的进程的信息。ps 命令提供了如下的两种格式化选项。
1. etime Display elapsed time since the process was started, in the form [[DD-]hh:]mm:ss. 1. etime 显示了自从该进程启动以来，经历过的时间。以[[DD-]hh:]mm:ss 的格式。
2. etimes Display elapsed time since the process was started, in seconds. 2. etimes 显示了自该进程启动以来，经历过的时间，以秒的形式。
### How to check how long a process has been running? ### 如何查看一个进程已经运行的时间？
You need to pass the -o etimes or -o etime to the ps command. The syntax is: 你需要在 ps 命令之后添加 -o etimes 或者 -o etime 参数。它的语法如下：
``` ```
ps -p {PID-HERE} -o etime ps -p {PID-HERE} -o etime
ps -p {PID-HERE} -o etimes ps -p {PID-HERE} -o etimes
``` ```
#### Step 1: Find PID of a process (say openvpn) #### 第一步：找到一个进程的 PID (openvpn 为例)
``` ```
$ pidof openvpn $ pidof openvpn
6176 6176
``` ```
#### Step 2: How long a openvpn process has been running? #### 第二步：openvpn 进程运行了多长时间？
``` ```
$ ps -p 6176 -o etime $ ps -p 6176 -o etime
``` ```
OR 或者
``` ```
$ ps -p 6176 -o etimes $ ps -p 6176 -o etimes
``` ```
To hide header: 隐藏头部:
``` ```
$ ps -p 6176 -o etime= $ ps -p 6176 -o etime=
$ ps -p 6176 -o etimes= $ ps -p 6176 -o etimes=
``` ```
Sample outputs: 样例输出：
![](http://s0.cyberciti.org/uploads/faq/2016/08/How-to-check-how-long-a-process-has-been-running.jpg) ![](http://s0.cyberciti.org/uploads/faq/2016/08/How-to-check-how-long-a-process-has-been-running.jpg)
The 6176 is the PID of the process you want to check. In this case I’m looking into openvpn process. Feel free to replace openvpn and PID # 6176 as per your own requirements. In this find example, I am printing PID, command, elapsed time, user ID, and group ID: 这个 6176 就是你想查看的进程的 PID。在这个例子中，我查看的是 openvpn 进程。你可以按照你的需求随意的更换 openvpn 进程名或者是 PID。在下面的例子中，我打印了 PID，执行命令，运行时间，用户 ID，和用户组 ID：
``` ```
$ ps -p 6176 -o pid,cmd,etime,uid,gid $ ps -p 6176 -o pid,cmd,etime,uid,gid
``` ```
Sample outputs: 样例输出：
``` ```
PID CMD ELAPSED UID GID PID CMD ELAPSED UID GID
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via: http://www.cyberciti.biz/faq/how-to-check-how-long-a-process-has-been-running/ via: http://www.cyberciti.biz/faq/how-to-check-how-long-a-process-has-been-running/
作者：[VIVEK GITE][a] 作者：[VIVEK GITE][a]
译者：[译者ID](https://github.com/译者ID) 译者：[MikeCoder](https://github.com/MikeCoder)
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本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出 本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出