如何在不使用完整路径的情况下远程永久执行命令？

Question

I am trying to execute “forever” command remotely using powershell but I am getting error

'forever' is not recognized as an internal or external command

Here is what I am doing. I have the node js script "MyNodeScript.js" which executes the forever command. The script is on the WebServer "MyWebServer1" . Node.Js and Forever is installed on MyWebServer1 globally.

    var exec = require('child_process').exec;
    var _ = require('underscore');
    var winston = require('winston');
    var async = require('async');

    var mycommand = 'forever -p ./logs --sourceDir ../wf_manager --workingDir ../wf_manager start -a --uid "ServiceApp" ServiceApp.js'

    function start(callback) {  
        async.waterfall([
            function (cb) {
                executeCommand(mycommand, false, cb);
            }
        ], function done(err) {
            if (err) {
                winston.error('failed to start all instances by forever:' + err);
            } else {
                winston.info('successfully started all instances by forever');
            }
            callback();
        });
    }

    function executeCommand(command, skip, callback) {
        async.waterfall([
            function (cb) {
                exec(command, cb);
            }
        ], function done(err) {
            if (err) {
                if (skip) {
                    // skip the error
                    callback(null);
                } else {
                    callback(err);
                }
            } else {
                callback(null);
            }
        });
    }

    module.exports = {
        executeCommand: executeCommand,    
        start: start
    }

    start(function(){});

On the same MyWebServer1 under same folder i have a powershell script "MyPowerShellScript.ps1" which call this node script. The powershell script has only one line

node D:\myfolder\maintenance\MyNodeScript.js

I can run this powershell script locally on MyWebServer1 and it works fine. But when i try to execute this powershell script as below from remote machine

 invoke-command -computername MyWebServer1 -filepath \\MyWebServer1\MyFolder\maintenance\MyPowerShellScript.ps1

i am getting error

error: failed to start all instances by forever:Error: Command failed: C:\\Windows\\system32\\cmd.exe /s /c "forever -p ./logs --sourceDir ../wf_manager --workingDir ../wf_manager start -a --uid "ServiceApp" ServiceApp.js"
+ CategoryInfo : NotSpecified: (error: failed t...ServiceApp.js":String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError
+ PSComputerName : MyWebServer1
'forever' is not recognized as an internal or external command, operable program or batch file.

Note that i can execute the script remotely without any error if i update "MyNodeScript.js" and use full physical path for the forever command

 var mycommand = 'C:\\Users\\admin\\AppData\\Roaming\\npm\\forever -p ./logs --sourceDir ../wf_manager --workingDir ../wf_manager start -a --uid "ServiceApp" ServiceApp.js'

However i would like to use just forever command. The path is already added as Environment variable on MyWebServer1

Answer 1

Try calling the ps1-file like this:

Invoke-Command -Scriptblock {powershell.exe -command {d:\blah\MyPowershellscript.ps1 } }

Via -filepath your specify a local scriptfile that should be executed remotely. As your script is present on the target system, you can omit that.