function watch($f, $command, $interval) {
$sha1 = New-Object System.Security.Cryptography.SHA1CryptoServiceProvider
$hashfunction = '[System.BitConverter]::ToString($sha1.ComputeHash([System.IO.File]::ReadAllBytes($file)))'
$files = @{}
foreach ($file in $f) {
$hash = iex $hashfunction
$files[$file.Name] = $hash
echo "$hash`t$($file.FullName)"
}
while ($true) {
sleep $interval
foreach ($file in $f) {
$hash = iex $hashfunction
if ($files[$file.Name] -ne $hash) {
iex $command
}
}
}
}
Пример использования:
$c = 'send-mailmessage -to "admin@whatever.com" -from "watch@whatever.com" -subject "$($file.Name) has been altered!"'
$f = ls C:\MyFolder\aFile.jpg
watch $f $c 60