start-transcript 导致脚本在后台作业中失败 [英] start-transcript causes script to fail in a background job

问题描述

我正在使用 start-job 创建一个 powershell 脚本作为后台作业，然后使用 start-transcript 记录它的输出.下面是两者的代码:

I am creating a powershell script as a background job using start-job which then logs it's output using start-transcript. Below is the code of both:

一

start-job  -filepath ./b.ps1 -ArgumentList 'test.txt'
wait-job *

b

param([parameter(Mandatory = $true)][string]$logfile)
Set-PSDebug -Strict
$ErrorActionPreference = 'Stop'
start-transcript $logfile

./a.ps1 的输出

Id              Name            State      HasMoreData     Location             Command                  
--              ----            -----      -----------     --------             -------                  
1               Job1            Running    True            localhost            param...                 
1               Job1            Failed     False           localhost            param...                 
2               Job2            Failed     False           localhost            param...   

./b.ps1 -log c:\test.txt 的输出

Transcript started, output file is test.txt
Transcript stopped, output file is C:\test.txt

我还通过设置echo here"行进行了一些测试，以确认该行正在播放.

I have also done some testing by setting "echo here" lines to confirm that is the line playing up.

推荐答案

显然后台作业不支持 Start-Transcript.如果您执行 Receive-Job 以查看脚本输出，您可能会看到如下错误:

Apparently Start-Transcript isn't supported in background jobs. If you do a Receive-Job to look at the script output you're likely to see an error like this:

This host does not support transcription.
    + CategoryInfo          : NotImplemented: (:) [Start-Transcript], PSNotSupportedException
    + FullyQualifiedErrorId : NotSupported,Microsoft.PowerShell.Commands.StartTranscriptCommand

顺便说一句，PowerShell 2.0 中我建议您从 Set-PSDebug -strict 切换到 Set-StrictMode -Version 2.0 - 它会捕获更多潜在错误.

BTW in PowerShell 2.0 I recommend you switch from Set-PSDebug -strict to Set-StrictMode -Version 2.0 - it will catch more potential errors.

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