从Linux在Android上启动持久性后台进程 [英] Launching a persistent background process on Android from linux

问题描述

说我有一个简单的可执行linux程序，该程序在循环中无限期运行，直到被明确杀死为止.我希望能够以这样一种方式部署它，即使我从我的Android设备断开USB电缆连接后，它仍可以继续运行.当我尝试运行这样的程序时，

Say I have a simple executable linux program that runs indefinitely in a loop till it is explicitly killed. I want to be able to deploy it in such a way that it continues to run even after I disconnect the USB cable from my Android device. When I try running the program like this,

$adb shell
<android_shell>$ /path/to/dir/myprog &

我能够断开电源线，将其重新连接后再做

I am able to disconnect the cord and when I connect it back and do a

$ps | grep myprog

我仍然可以看到它正在运行.

I can still see it running.

但是，当我尝试以此方式运行时，

However, when I try running it this way,

$adb shell /path/to/dir/myprog &

当我断开电源线时，该过程被终止，并且我再也无法通过ps找到它.

the moment I disconnect my cord, the process is killed and I am not able to find it anymore with ps.

1)这两种执行命令的方式有什么区别?

1) What is the difference in these two ways of executing the command?

2)有什么方法可以从台式机终端运行命令，从而实现我想做的事情?

2) Is there a way I can run commands from the desktop terminal in a way to achieve what I'm trying to do?

推荐答案

android_shell> $/path/to/dir/myprog&

android_shell>$ /path/to/dir/myprog &

此过程正在设备的后台运行. ps在设备内部.

this process is running in your device's background. ps inside device.

$ adb shell/path/to/dir/myprog&

$adb shell /path/to/dir/myprog &

此进程正在开发PC的后台运行，很明显，adb进程与adbd守护程序的套接字连接通过断开电缆而被杀死.

This process is running in your development PC's background, obviously the adb process's socket connection to the adbd daemon gets killed by removing cable.

解决方案:- 使用nohup.

adb shell "nohup /path/to/dir/myprog &"

正如LieRyan所说的"很重要.

As LieRyan mentioned " is important.

nohup-

到shell的挂断信号可以使用&杀死您的进程背景. nohup捕获SIGHUP挂断并忽略，因此它永远不会到达应用程序. 在adb shell情况下，&可以工作，但是我遇到了&的问题，由于某种未知原因，进程被杀死了.但是当时无法弄清楚原因(导致adb shell被杀死的原因).使用nohup，我从来没有遇到任何问题.

A hangup signal to shell can kill your process background with &. nohup catches the SIGHUP hangup and ignores, so that it never reaches the application. In adb shell case, & will work,But I had faced issue with & and process get killed due to some unknown reason. But could not dig the reason(what caused adb shell kill) at that time.With nohup I never faced any problem.

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