background-process

I'm writing a java application where I require to run a process in background throughout the lifetime of the running application. Here's what I have: Runtime.getRuntime().exec("..(this works ok).."); Process p = Runtime.getRuntime().exec("..(this works ok).."); InputStream is = p.getInputStream(); InputStreamReader isr = new InputStreamReader(is); BufferedReader br = new BufferedReader(isr); So, basically I print out every br.readLine() . The thing that I'm not sure about is how to implement this code in my application because wherever I put it (with Runnable), it blocks other code from

How do I lauch a job in a Linux shell, so that even if the shell which launches it terminates, this job will still persist? More specifically, I am trying to run strace on a process. It runs perfectly if I do it in a terminal. However, I want to do it in a remote shell which will stop as soon as all the commands have been executed. "strace -p pid &" doesn't have any effect because when the shell stops, the background job also gets killed. How should I do it? nohup seems to be thing I am looking for. However, ssh user@remote_machine script_name doesn't seem to have any effect neither. In the

I've set up background fetch, using outline from NSScreencast episode #92 . - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { ... [application setMinimumBackgroundFetchInterval:UIApplicationBackgroundFetchIntervalMinimum]; ... } - (void)application:(UIApplication *)application performFetchWithCompletionHandler:(void (^)(UIBackgroundFetchResult))completionHandler { if ([[MyAppAPIClient manager] reachable] && [[Session manager] userSignedIn]) { [[[Session manager] user] fetchBackgroundWithSuccess:^(NSURLSessionDataTask *task,

I am developing an app using Codename One, which connects to a Bluetooth LE proprietary external device and logs received data (on average data arrives approximately once per second). I am using the Bluetooth LE CN1 library (a wrapper for Cordova Plugin ). The app should be able to receive and log the data even when not in foreground, which I have no idea how to do in CodenameOne in a way that the system wont shut it down on its own. I've written a native Android app, where I use a service with a persistent notification for the duration of the connection with the external BTLE device - the

I've written a tcsh script to clear garbage data in a cluster, the code is : set hosts = $1 set clear_path = $2 foreach i ($hosts) rsh $i rm -rvf $clear_path end When I run this script in the background like this : disk_clean.sh hosts_all /u0/data/tmp > log & The job will get stuck and show the information like this: [1] + Suspended (tty input) If I run this in foreground, it can finish normally. Why does this happen? How can I run this script in the background and redirect the output into a log file? 来源： https://stackoverflow.com/questions/42361200/why-do-i-get-the-information-of-suspended

I have a WP 8.1 Runtime which launches a DeviceUseTrigger background task. The problem is that whenever the phone reboots, this task obviously cancels, but the task registration remains in place. So when I launch my app the next time the background task appears to be running when in reality it isn't. I want some way of detecting whenever the phone reboots and/or detect in some way whether or not the task is actually running or not. The code I'm using to check background task registration is as follows: foreach(IBackgroundTaskRegistration task in BackgroundTaskRegistration.AllTasks.Values) { if

I’m working on the iOS version of my phonegap-based navigation app. My app tracks the user’s location around a walk route using GPS and alerts the user using audio (navigator.notification.beep) and tactile (navigator.notification.vibrate) feedback when they reach a location at which there’s new instructions for them to follow. When my app is running in the foreground, both the audible beep and the vibration fire on reaching the geographic location but when the app is paused in the background, either by pressing the power button to turn the screen off or pressing the home button to return to