blocks|key|4286348|text|当您执行pgrep+sleep时，您将看到sleep命令的PID，该命令作为您创建的sudo进程的子进程运行。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|4286349|作为一个快速演示，我将以下代码保存为subproc.py|4286350|import+subprocess
pr+=+subprocess.Popen(["sudo",+"sleep",+"100"])
print("Process+spawned+with+PID:+%25s"+%25+pr.pid)|code-block|syntax|javascript|4286351|运行此脚本时，我们可以看到产生了两个进程：|4286352|~/$+python+subproc.py
Process+spawned+with+PID:+5296

~/$+ps+all+%7C+grep+sleep
++++0++5296+++++1+++++sudo+sleep+100
++++0++5297++5296+++++sleep+100|4286353|您会注意到，您在代码中知道的PID是'parent‘sudo进程。这是您应该终止的进程，但您需要使用sudo来完成此操作：|4286354|subprocess.check_call(["sudo",+"kill",+str(pr.pid)])
#You+might+want+to+wait+for+the+process+to+end:
os.waitpid(pr.pid,+0)|4286355|entityMap^0|4|B|L|5|16|4|0|I|A|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|16|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|17|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|18|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|19|8|@]|D|@]|E|$]]|$1|S|3|T|5|J|7|1A|8|@]|D|@]|E|$K|L]]|$1|U|3|-4|5|6|7|1B|8|@]|D|@]|E|$]]]|V|$]]

When you execute <code>pgrep sleep</code> you are shown the PID of the <code>sleep</code> command, running as a child of the <code>sudo</code> process you created.

As a quick demo, I saved the following as <code>subproc.py</code>:

<pre><code>import subprocess
pr = subprocess.Popen(["sudo", "sleep", "100"])
print("Process spawned with PID: %s" % pr.pid)
</code></pre>

When running this script, we can see two processes spawned:

<pre><code>~/$ python subproc.py
Process spawned with PID: 5296

~/$ ps all | grep sleep
 0 5296 1 sudo sleep 100
 0 5297 5296 sleep 100
</code></pre>

You'll notice that the PID you know about in your code is the 'parent' sudo process. This is the process you should kill, but you'll need to use sudo to do it:

<pre><code>subprocess.check_call(["sudo", "kill", str(pr.pid)])
#You might want to wait for the process to end:
os.waitpid(pr.pid, 0)
</code></pre>

blocks|key|4286101|text|我想我想通了，问题是如果我这么做了|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4286102|import+subprocess,+os
pr+=+subprocess.Popen(["sudo",+"sleep",+"100"])
print("Process+spawned+with+PID:+%25s"+%25+pr.pid)
pgid+=+os.getpgid(pr.pid)
subprocess.check_output("sudo+kill+{}".format(pgid))|code-block|syntax|javascript|4286103|它将终止启动python解释器的进程。|4286104|>>>+Terminated|4286105|因此，我将preexec_fn设置为os.setpgrp|offset|length|style|CODE|4286106|import+subprocess,+os
pr+=+subprocess.Popen(["sudo",+"sleep",+"100"],+preexec_fn=os.setpgrp)
print("Process+spawned+with+PID:+%25s"+%25+pr.pid)
pgid+=+os.getpgid(pr.pid)
subprocess.check_output("sudo+kill+{}".format(pgid))|4286107|在另一个shell中，如果我检查|4286108|pgrep+sleep|4286109|什么都没有显示，所以它实际上被杀死了。|4286110|entityMap^0|0|0|0|0|5|A|I|A|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|11|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|12|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|14|8|@$M|15|N|16|O|P]|$M|17|N|18|O|P]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|19|8|@]|9|@]|A|$E|F]]|$1|S|3|T|5|6|7|1A|8|@]|9|@]|A|$]]|$1|U|3|V|5|D|7|1B|8|@]|9|@]|A|$E|F]]|$1|W|3|X|5|6|7|1C|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1D|8|@]|9|@]|A|$]]]|Z|$]]

I think I figured it out, the issue was that if I did this

<pre><code>import subprocess, os
pr = subprocess.Popen(["sudo", "sleep", "100"])
print("Process spawned with PID: %s" % pr.pid)
pgid = os.getpgid(pr.pid)
subprocess.check_output("sudo kill {}".format(pgid))
</code></pre>

it would kill the process that started the python interpreter 

<pre><code>&gt;&gt;&gt; Terminated
</code></pre>

so instead, I set the <code>preexec_fn</code> to <code>os.setpgrp</code>

<pre><code>import subprocess, os
pr = subprocess.Popen(["sudo", "sleep", "100"], preexec_fn=os.setpgrp)
print("Process spawned with PID: %s" % pr.pid)
pgid = os.getpgid(pr.pid)
subprocess.check_output("sudo kill {}".format(pgid))
</code></pre>

in another shell, if I check

<pre><code>pgrep sleep
</code></pre>

nothing shows up, so it is actually killed.

blocks|key|4286142|text|我在根子过程中也遇到了同样的问题，但是这里和这里的答案--+Python+how+to+kill+root+subprocess对我不起作用。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4286143|最后，唯一有效的方法是：|4286144|proc+=+subprocess.Popen(["sudo",+exe_path],+stdout=subprocess.PIPE,+stdin=subprocess.PIPE)
.
.
.
os.system("sudo+pkill+-9+-P+"+%2B+str(proc.pid))|code-block|syntax|javascript|4286145|不需要-+preexec_fn=os.setpgrp|4286146|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/51240992/python-how-to-kill-root-subprocess^0|U|Y|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

I had the same problem with root subprocess but the answers here and here- <a href="https://stackoverflow.com/questions/51240992/python-how-to-kill-root-subprocess">Python how to kill root subprocess</a> did not worked for me.
At the end the only thing that worked was:
<pre><code>proc = subprocess.Popen([&quot;sudo&quot;, exe_path], stdout=subprocess.PIPE, stdin=subprocess.PIPE)
.
.
.
os.system(&quot;sudo pkill -9 -P &quot; + str(proc.pid))
</code></pre>
Without the need for- preexec_fn=os.setpgrp

I am running with a user that can make root-level calls without having to supply a password. My user currently does something like this

<pre><code>pr = subprocess.Popen("sudo sleep 100".split())
sleep(5)
pr.kill()
</code></pre>

but that leads to this error because the user isn't root so it can't kill a root process

<pre><code>Traceback (most recent call last):
 File "&lt;stdin&gt;", line 1, in &lt;module&gt;
 File "/usr/lib/python2.7/subprocess.py", line 1572, in kill
 self.send_signal(signal.SIGKILL)
 File "/usr/lib/python2.7/subprocess.py", line 1562, in send_signal
 os.kill(self.pid, sig)
OSError: [Errno 1] Operation not permitted
</code></pre>

so I try to do something like this

<pre><code>pr = subprocess.Popen("sudo sleep 100".split())
sleep(5)
kill_pr = subprocess.Popen("sudo kill {}".format(pr.pid))
</code></pre>

but that doesn't kill the process in question. For example, if

<pre><code>&gt;&gt; subprocess.Popen("sudo sleep 100".split()).pid
5000
</code></pre>

but

<pre><code>$ pgrep sleep
5001
</code></pre>

so it seems that the <code>pid</code> returned from <code>subprocess.Popen("..").pid</code> is one higher than the actual pid of the process running the command that I want to kill

I'm assuming that the <code>pid</code> returned from the <code>Popen</code> call is the parent process, so I try doing something like

<code>sudo kill -- -$PID</code>, where <code>$PID</code> is the one returned from <code>Popen</code>, but that just gives me

<pre><code>kill: sending signal to -2100 failed: No such process
</code></pre>

why doesn't the process exist?

Essentially, I just need a way to run a command with <code>sudo</code> using python's subprocess, then be able to kill it when I need to. I'm assuming I need to run some type of <code>sudo kill</code> command with the <code>pid</code> of the process I'm trying to kill or something like that but I'm unable to determine exactly how to do this.

Killing sudo-started subprocess in python

解释器

Python

我使用的用户可以进行root级别的调用，而无需提供密码。我的用户当前执行的操作如下所示pr = subprocess.Popen("sudo sleep 100".split())sleep(5)pr.kill()但是这会导致这个错误，因为用户不是root用户，所以它不能杀死根进程Traceback (most rec...

问在python中终止sudo启动的子进程
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