Updates all SysInternals tools contained within $localDirectory from live.sysinternals.com.

Update-SysInternals.ps1

function Get-SysInternalsTools {
    [CmdletBinding(DefaultParameterSetName='Update')]
    param(
        [Parameter(Mandatory)]
        $localDirectory,
        [Parameter(ParameterSetName='Download')]
        [Switch]$DownloadAll
    )
    begin {
        $localTools  = Get-ChildItem $localDirectory -Filter *.exe
        $onlineTools = Get-ChildItem '\\live.sysinternals.com\tools' -Filter *.exe
    }
    process {
        switch ($PSCmdlet.ParameterSetName) {
            'Update' {
                foreach ($tool in $localTools) {
                    if ($tool.LastWriteTime -lt ($online = $onlineTools | ?{$_.Name -eq $tool.Name}).LastWriteTime) {
                        Write-Verbose "[$($tool.Name)] requires updating..."
                        try {
                            Invoke-WebRequest -Uri $online.FullName -OutFile $tool.FullName -ErrorAction Stop
                        }
                        catch {
                            Write-Warning "$($tool.Name) failed to update."
                        }
                    }
                }
            }
            'Download' {
                foreach ($tool in $onlineTools) {
                    Copy-Item -Path $tool.FullName -Destination $localDirectory -Force
                }
            }
        }
    }
}

if ($MyInvocation.InvocationName -NE '.') {Update-SysInternalsTools -localDirectory 'C:\Users\James\Utilities\Portable Useful\sysinternals'}