child-process

问题 My project is structured as follows: myapp -server.js -test --testcontent ---package.json -package.json I have two package.json files and I want to run npm install on the package.json inside the testcontent folder. If in the command line I go to myapp/test/testcontent and run npm install it works and it creates a new folder node_modules with the dependencies from the correct package.json . How can that be done from within gulp? I tried the following but it uses the package.json in myapp not

问题 I'm running Node.js project as service using nssm. When user clicks button on my nodejs website it should run require('child_process').exec('cmd /c batfile.bat', function({ res.send(somedata); }); but instead it just skips running bat file and jumps to res.send(somedata) . Why is that? When I run Node.js using cmd and npm start server.js it works fine. How can I make exec work while running nodejs as service? Edit, some code: require('child_process').exec('cmd /c batfile.bat', function(){ var

问题 It has been 3 days I'm searching on forums a way to make work my program, and it still doesn’t work… I'm working on my first AngularJS project , and I need to launch an external program when the user clicks on an image. I have a module named tool-list, and in my tool-list.component.ts, I export a class named ToolListComponent. In this class I have my function to launch my external program. launchtool(){ alert("I'm trying to launch test.bat!"); const spawn = require('child_process').spawn; /

问题 It has been 3 days I'm searching on forums a way to make work my program, and it still doesn’t work… I'm working on my first AngularJS project , and I need to launch an external program when the user clicks on an image. I have a module named tool-list, and in my tool-list.component.ts, I export a class named ToolListComponent. In this class I have my function to launch my external program. launchtool(){ alert("I'm trying to launch test.bat!"); const spawn = require('child_process').spawn; /

问题 I'm writing a simple(ish) application that allows an internal system at work to request a copy process (using rsync) from a remote server to another remote server instigated using a REST call. I'm already familiar enough with the express framework, and have just started experimenting with the child_process library, and stumbled upon a small problem. I am successfully starting rsync processes using node's childProcess.spawn() , my issue is that rsync outputs its progress line-buffered with a

问题 I just started using Node.js and I'm now trying to make my script run in the background every 10 seconds like a daemon waiting for something to do, when there is something to run from the database It reads the output from the program and does certain tasks depending on the output. This is what I've been able to do so far, It works just as I intended but can only run once even in the background. How can I make it run like a daemon every 10 seconds? Code: var spawn = require('child_process')

问题 When I execute the (made up and ridiculous) command banana from bash I get the following error: bash: banana: command not found But if I execute banana in a child_process.spawn in Node.js, I get the error: net.js:624 throw new TypeError('invalid data'); ^ TypeError: invalid data at WriteStream.Socket.write (net.js:624:11) at ChildProcess.<anonymous> at ChildProcess.emit (events.js:107:17) at Process.ChildProcess._handle.onexit (child_process.js:1065:12) at child_process.js:1137:20 at process.

问题 When I execute the (made up and ridiculous) command banana from bash I get the following error: bash: banana: command not found But if I execute banana in a child_process.spawn in Node.js, I get the error: net.js:624 throw new TypeError('invalid data'); ^ TypeError: invalid data at WriteStream.Socket.write (net.js:624:11) at ChildProcess.<anonymous> at ChildProcess.emit (events.js:107:17) at Process.ChildProcess._handle.onexit (child_process.js:1065:12) at child_process.js:1137:20 at process.

问题 I'm spawning a child that produces lots of data (I'm using 'ls -lR /' here as an example). I want to asynchronously read the child's stdout 100 bytes at a time. So I want to do: get100().then(process100).then(get100).then(process100).then(... For some reason, this code only loops 3 times and I stop getting Readable events. I can't figure out why? var Promise = require('bluebird'); var spawn = require("child_process").spawn; var exec = spawn( "ls", [ "-lR", "/"] ); var get100 = function () {

问题 I'm developing a Launcher application for games. Much like XBOX Dashboard in XNA. I want to open back my program when the process which it started(the game) exits. With a simple game this is working: [DllImport("user32.dll")] [return: MarshalAs(UnmanagedType.Bool)] static extern bool SetForegroundWindow(IntPtr hWnd); [DllImportAttribute("User32.DLL")] private static extern bool ShowWindow(IntPtr hWnd, int nCmdShow); private const int SW_SHOW = 5; private const int SW_MINIMIZE = 6; private