Compare a file size between 2 servers (Unix & Windows) - unix

Question

I need to write a Windows batch file to resolve the below issue.
I need to make sure that a file is completely transferred from it's origin server (Unix) to the target server (Windows).
I am trying to compare the file size between the two servers, the solution needs to be in a Windows batch file (I am having trouble with connecting to a remote Unix server using SSH in a DOS batch file)

Answer 1

From the fact you can use SSH, I assume you also have an SFTP access.
You can use following PowerShell script using WinSCP .NET assembly.
param (
$sessionUrl = "sftp://user:mypassword;fingerprint=ssh-rsa-xxxxxxxxx...=#example.com/",
$localPath = "C:\path\file.dat",
$remotePath = "/path/file.dat"
)
$localSize = (Get-Item $localPath).Length
Write-Host "$localPath has $localSize bytes"
# Load WinSCP .NET assembly
Add-Type -Path (Join-Path $PSScriptRoot "WinSCPnet.dll")
# Setup session options
$sessionOptions = New-Object WinSCP.SessionOptions
$sessionOptions.ParseUrl($sessionUrl)
$session = New-Object WinSCP.Session
# Connect
$session.Open($sessionOptions)
$remoteSize = $session.GetFileInfo($remotePath).Length
$session.Dispose()
Write-Host "$remotePath has $remoteSize bytes"
# Compare cheksums
if ($localSize -eq $remoteSize)
{
Write-Host "Match"
$result = 0
}
else
{
Write-Host "Does NOT match"
$result = 1
}
exit $result
Or even better, compare file checksums, not just size, if your server support that, see:
Verify checksum of a remote file against a local file over SFTP/FTP protocol
(I'm the author of WinSCP)