CMDExec if exists then stop

Question

I need to have step in SQL Job to check is there file on some path, so if there is file then stop with further execution. Something like:

$file = "\\networklocation\file.bak"
if (-exists (Test-Path $file)) 
{
    throw "$file not found."
}

Answer 1

Just omit the -exists switch and ensure the $ErrorActionPreference is set to stop:

$ErrorActionPreference = 'stop'
$file = "\\networklocation\file.bak"
if (Test-Path $file) 
{
    throw "$file found."
}