from twitters :)

Get-HexDump.ps1

function Get-HexDump($path,$width=10, $bytes=-1)
{
$OFS="" 
Get-Content -Encoding byte $path -ReadCount $width `
-totalcount $bytes | Foreach-Object { 
$byte = $_
$hex = $byte | Foreach-Object { 
" " + ("{0:x}" -f $_).PadLeft(2,"0")} 
$char = $byte | Foreach-Object { 
if ([char]::IsLetterOrDigit($_)) 
{ [char] $_ } else { "." }} 
"$hex $char" 
}
}
#function Get-xxx {
# Write-Host "Get-xxxx:"
#}