Thursday, November 23, 2017

Delete the undeletable on Windows

I had trouble deleting C:\ProgramData\Docker on Docker for Windows using Windows containers. This is because it contains a full Windows directory layout, with all system files and special permissions and flags. Here's a Powershell snippet to get a file hierarchy on Windows into a state where it can be deleted.

$ErrorActionPreference = "stop"

function reallyDelete($d) {
    function renameToNumbersRecursive($dir) {
        $i = 0
        foreach($f in (dir $dir)) {
            while(Test-Path ($dir + "\" + $i)) {
            try {
                Rename-Item $f.FullName ($dir + "\" + $i)
            } catch {
                takeown /f $dir | Out-Null
                icacls $dir /reset | Out-Null
                takeown /f $f.FullName | Out-Null
                icacls $f.FullName /reset | Out-Null
                Rename-Item $f.FullName ($dir + "\" + $i)

        foreach($f in (dir $dir)) {
            if($f -is [System.IO.DirectoryInfo]) {

    # paths might become too long for icacls, so rename paths to short numbers
    renameToNumbersRecursive $d

    takeown /f $d /r   | Out-Null
    icacls $d /reset /T   | Out-Null

    attrib -s -h -r "$d\*.*" /s /d   | Out-Null

    cmd /c del /s /q $d   | Out-Null
    cmd /c rmdir /s /q $d   | Out-Null

reallyDelete "C:\ProgramData\Docker"

Tuesday, May 30, 2017

Utility to remind you to keep a task diary

Here's a program that asks you every hour what you are doing, so you end up with a diary at the end of the day. It saves your input to a text file WhatAmIDoing.txt in the same folder you put the exe.

Note that if you move the location of the exe file, you will need to click the "ask every hour" button again.