PowerShell MySQL转储脚本无法正确转储

Question

$d= Get-Date
$dString = $d.Year.ToString() + "-" + $d.Month.ToString() + "-" + $d.Day.ToString() + "_" + $d.Hour.ToString() + "-" + $d.Minute.ToString() + "-" + $d.Minute.ToString()
$backupFilePath = "C:\wamp\backupFileName_" + $dString + ".sql"
$cmd = "& 'C:\wamp\bin\mysql\mysql5.6.12\bin\mysqldump.exe' -u ipbform -p123123 wiki > " + $backupFilePath
Write-Host $cmd
invoke-expression $cmd | out-null

当我查看MySQL转储文件时，我得到了这个：

ÿþ-（一堆随机符号，如编译文件）

Answer 1

ÿþ是以little-endian Unicode格式编码的文件的Byte Order Mark。试试这个：

$cmd = "& 'C:\wamp\bin\mysql\mysql5.6.12\bin\mysqldump.exe' -u ipbform -p123123 wiki"
Write-Host $cmd
Invoke-Expression $cmd | Out-File $backupFilePath -Encoding ASCII