PHP：获取特定进程的PID

发布于 2024-09-29 16:18:48 字数 684 浏览 4 评论 0原文

我有一个 QNAP 盒子，它运行 Linux 风格，但我在使用 php 脚本获取进程的 PID 时遇到问题。到目前为止我所拥有的：

$command = "PATH=$PATH:/share/MD0_DATA/.qpkg/Optware/bin: nohup /opt/bin/plowdown -o /share/MD0_DATA/Qdownload/plowshare http://www.megaupload.com/?d=m7duotr1 2> /share/MD0_DATA/Qdownload/plowshare/outputeeds.txt > /dev/null &";
exec($command, $out);
$result = $out[0];
echo $result;

如果我通过 PUTTY 运行命令，我会得到：

[~] # nohup /opt/bin/plowdown -o /share/MD0_DATA/Qdownload/plowshare http://www.megaupload.com/?d=m7duotr1 2> /share/MD0_DATA/Qdownload/plowshare/outputteeds.txt > /dev/null &
22526

我做错了什么？

谢谢，

克里斯蒂安。

原文

I have a QNAP box, that runs a flavor of linux and I am having problems getting the PID of a process using a php script. What I have so far:

$command = "PATH=$PATH:/share/MD0_DATA/.qpkg/Optware/bin: nohup /opt/bin/plowdown -o /share/MD0_DATA/Qdownload/plowshare http://www.megaupload.com/?d=m7duotr1 2> /share/MD0_DATA/Qdownload/plowshare/outputeeds.txt > /dev/null &";
exec($command, $out);
$result = $out[0];
echo $result;

If I run the command through PUTTY, I get:

[~] # nohup /opt/bin/plowdown -o /share/MD0_DATA/Qdownload/plowshare http://www.megaupload.com/?d=m7duotr1 2> /share/MD0_DATA/Qdownload/plowshare/outputteeds.txt > /dev/null &
22526

What am I doing wrong?

Thanks,

Cristian.

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衣神在巴黎 2024-10-06 16:18:48

shell 通常不会打印它在后台启动的进程的 PID，除非它是交互式的。否则，在启动期间您将仅从所有启动进程的 PID 中获得大量输出。

所以你需要让shell打印PID。做

 exec("(PATH=$PATH:/share/MD0_DATA/.qpkg/Optware/bin: " . 
      "nohup /opt/bin/plowdown -o /share/MD0_DATA/Qdownload/plowshare " .
      "http://www.megaupload.com/?d=m7duotr1 2> " . 
      "/share/MD0_DATA/Qdownload/plowshare/outputeeds.txt > /dev/null &);" . 
      "echo $;", $out);

The shell does not normally print the PID of a process it starts in background, unless it's interactive. Otherwise, you would get tons of output during bootup just from the PIDs of all the processes that get started.

So you need to make the shell print the PID. Do

 exec("(PATH=$PATH:/share/MD0_DATA/.qpkg/Optware/bin: " . 
      "nohup /opt/bin/plowdown -o /share/MD0_DATA/Qdownload/plowshare " .
      "http://www.megaupload.com/?d=m7duotr1 2> " . 
      "/share/MD0_DATA/Qdownload/plowshare/outputeeds.txt > /dev/null &);" . 
      "echo $;", $out);

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