PowerShell/Scripts/SHA256.ps1

<#
.SYNTAX       SHA256.ps1 [<file>]
.DESCRIPTION  prints the SHA256 checksum of the given file
.LINK         https://github.com/fleschutz/PowerShell
.NOTES        Author: Markus Fleschutz / License: CC0
#>

param($File = "")
if ($File -eq "" ) { $File = read-host "Enter the filename" }

try {
	$Result = get-filehash $File -algorithm SHA256
	write-output "SHA256 hash is:" $Result.Hash
	exit 0
} catch {
	write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}