spawn

问题 after executing a command with execSync which executes with sh I noticed the following: spawnSync /bin/sh ENOENT bin is currently added to PATH. any thoughts? 回答1: Normally the cause is that the path where you are executing this doesn't exist see the accepted answer in this question How do I debug “Error: spawn ENOENT” on node.js? 回答2: This error can also be caused by passing a directory that does not exist to the cwd . Double check that the path you are passing as the cwd option is correct.

问题 Scenario: Using a master script to spawn a variable number of child processes a variable number of times in order to perform load testing against a server. The master script initially spawns all the children it can (according to its configuration settings) and then as the children processes exit if there are more runs requested by the config then new children are spun up. What I'm seeing is an immediate failure upon attempting to spin up the 83rd child process. 83? I'm not doing anything to

问题 I'm trying to use MPI_Comm_spawn to start a second process. Just for demonstration pourposes. The program is quite simple: int main(int argc, char* argv[]) { int my_id, numprocs; MPI_Comm All; MPI_Init(&argc, &argv) ; MPI_Comm_rank(MPI_COMM_WORLD, &my_id) ; MPI_Comm_size(MPI_COMM_WORLD, &numprocs) ; cout << "I'm process "<< my_id << " and we are " << numprocs <<endl; MPI_Comm_spawn("child.exe",MPI_ARGV_NULL,2,MPI_INFO_NULL,my_id,MPI_COMM_WORLD, &All,MPI_ERRCODES_IGNORE); MPI_Comm_size(All,

问题 I have the following code that's intended to spawn and detach a child process, which is just another node.js script in the same directory. Here's the exact code I'm running: var fs = require('fs'); var child = require('child_process'); var out = fs.openSync('/tmp/daemon.log', 'a'); var options = { cwd: process.cwd(), env: process.env, detached: true, stdio: ['ignore', out, process.stderr] }; child.spawn('/usr/local/bin/node ./daemon.js', [], options).unref(); All daemon.js does right now is

问题 I'd like to build a promise that spawns a child process using require('child_process').spawn . The process streams its output to stdout and its errors to stderr . I would like the promise to: reject(child.stderr stream (or its data)) if child.stderr emits any data. resolve(child.stdout stream) only if no error is emitted. I'm doing this because I want to chain the promise to: a then that processes the child.stdout stream (upload the stream to an S3 bucket). a catch that can process the child

问题 i have a little issue....i want to spawn Quads in my Scene and they all should have either red or green as Material. But the Random.Range function will only int´s, how could i solve it ?? void SpawningSquadsRnd() { rndColor[0] = Color.red; rndColor[1] = Color.green; for (int i = 0; i < 5; i++) { GameObject quad = Instantiate(squadPrefab, new Vector3(Random.Range(- 23, 23), 1.5f, Random.Range(-23, 23)), Quaternion.identity); int index = Random.Range(0, rndColor.Length); quad.gameObject

问题 I am attempting to use an external package: npm install [python-shell][1] Right now, I have just the basic js file with the example the package comes with: console.log('hey in main.js') var PythonShell = require('python-shell'); PythonShell.run('./my_script.py', function (err) { if (err) throw err; console.log('finished running python script'); }); Along with my_script.py , etc When I start up the server, the console.log says: Uncaught TypeError: spawn is not a function Within the index.js of

问题 I made a pseudo terminal with method described here: http://lists.apple.com/archives/student-dev/2005/Mar/msg00019.html The terminal itself worked well. Anyway the problem is terminal cannot being switched to child process. For an example, I launched bash with NSTask , and if I execute ftp within the bash , it stops automatically. ftp ftp ftp> [1]+ Stopped ftp bash-3.2$ And if I try to continue the ftp with fg , it terminates quietly. (I checked this with Activity Monitor ) fg fg ftp bash-3.2

问题 I would like to start a server in background, go back and execute some other targets, and then stop the server when Ant finishes executing all targets. I have come up with the following two solutions but they both block Ant from executing the subsequent targets. Since I want the process to die in the end, I do not want to use spawn="true". Is there any other solution? <target name="Start_Selenium_Server"> <java dir="lib" jar="lib/selenium-server-standalone-2.28.0.jar" fork="true"> <arg line="

问题 I need to spawn a separate python process that runs a sub script. For example: main.py runs and prints some output to the console. It then spawns sub.py which starts a new process. Once main.py has spawned sub.py it should terminate whilst sub.py continues to run. Thank you. Edit: When I run main.py it prints 'main.py' but nothing else and sub.py doesn't launch. main.py print "main.py" import subprocess as sp process=sp.Popen('sub.py', shell=True, stdout=sp.PIPE, stderr=sp.PIPE) out, err =