PowerShell よく忘れる

gistfile1.ps1

select-object @{ n = "propertyName"; e = { /* expression $_ */ } }

gistfile2.ps1

# utf-8 のBOMありなしをみたかった
$bytes = [System.IO.File]::ReadAllBytes("hoge.xml")
($bytes[0..10] | % { $_.ToString("x")}) -join ' '

gistfile3.ps1

$xml = New-Object System.Xml.XmlDocument
$xml.PreserveWhitespace = $true
$xml.Load($file)

$nsmgr = New-Object System.Xml.XmlNamespaceManager $xml.NameTable
$nsmgr.AddNamespace("x", "http://schemas.microsoft.com/.NetConfiguration/v2.0")

$xml.SelectSingleNode("(//appSettings | //x:appSettings)/@file", $nsmgr).Value = $new_value
$xml.Save($file)

gistfile4.ps1

function f 
{
  param([Parameter(ValueFromPipeline=$true)]$p)

  begin {}
  process {}
  enc {}

}

gistfile5.ps1

sqlcmd -S localhost\dev -d dbname  -E -Q @"
set nocount on;
select 'a', 'b', 'c', 0 , 1, 2
;
"@ -h -1 -s "," -W