Bash 在powershell中等待命令输出中的文本

如何将下面的bash语句转换为PowerShell

( docker-compose -f docker-compose.yml logs -f & ) | grep -q "Initialization Complete"

该语句跟踪docker日志，直到找到文本“Initialization Complete”，然后允许脚本继续

我已经完成了这一步，但不确定在找到文本后如何继续执行脚本

docker-compose -f docker-compose.yml logs -f | Out-String -Stream | Select-String "Initialization Complete"

---

通常，PowerShell的

tail-f

等效于

Get Content-Wait

但是，Bash子shell（

（…）

）与后台进程（

&

）的巧妙组合并没有直接的PowerShell等价物

相反，您必须使用循环来监视PowerShell中的后台进程：

# Start the Docker command as a background job.
$jb = Start-Job { docker-compose -f docker-compose.yml logs -f }

# Loop until the data of interest is found.
while ($jb.HasMoreData) { 
  # Receive new data output by the background command, if any,
  # and break out of the loop once the string of interest is found.
  Receive-Job $jb -OutVariable output | 
    ForEach-Object { if ($_ -match "Initialization Complete") { break } }
  # With a stream that is kept open, $jb.HasMoreData keeps reporting $true.
  # To avoid a tight loop, we sleep a little whenever nothing was received.
  if ($null -eq $output) { Start-Sleep -Seconds 1 } 
}

# Clean up the background job, if it has completed.
if ($jb.Status -eq 'Complete') { Remove-Job $jb }