Get-ExecutionPolicy
Set-ExecutionPolicy
./<script-file.ps1>
Set-ExecutionPolicy RemoteSigned
$PSVersionTable
Select-String -Pattern "<keyword-正規表現>" <file-name> | % {$_.ToString()} > <out-file-name>
$a=Get-Content -Encoding UTF8 <file-name1> $b=Get-Content -Encoding UTF8 <file-name2> Compare-Object $a $b