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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Apple’ Category

Lode Runner Web Game

Posted by jpluimers on 2022/01/24

Just found out about [Wayback] Lode Runner Web Game:

A HTML5 (CreateJS) remake of Lode Runner

I have played that way too much in my Apple ][ and //e days.

Hopefully I won’t be addicted to it as back in those days.

Just watching the demo mode is soooooo cool!

I remember designing my own lievens, then winning from the local Apple shop (Vlasveld Computers, which also had a country wide Apple magazine). Cool days!


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Posted in //e, 6502, About, Apple, Apple ][, History, Personal, Retrocomputing | Leave a Comment »

dd on MacOS / OS X with progress report

Posted by jpluimers on 2022/01/21

Since dd on Apple does not support progress parameters via [Wayback] macos dd progress – Google Search:

  • [Wayback] Quick: dd with progress indication on macOS

    A nice way I found to get progress indication whilst still being able to benefit from the huge speed increase in using /dev/rdiskX is to install a tool called pv, also known as [WayBack] Pipe Viewer.


    sudo dd if=/dev/rdiskX bs=1m | pv -s 64G | sudo dd of=/dev/rdiskY bs=1m

    Another way to achieve something similar would be to use brew to install coreutils, which will come with a newer version of dd that supports the status option.


    gdd if=/dev/diskX of=/dev/diskY bs=1m status=progress

  • [Wayback] el capitan – How can I track progress of dd – Ask Different

    You just need to enter a controlT character from the keyboard while the dd command is executing.

    By pressing the controlT character, you are sending the same SIGINFO signal to the dd command that the command pkill -INFO -x dd sends.


    dd itself doesn’t provide a progress bar. You may estimate the progress of the dd copy process by adding a pkill -INFO command though.


    dd if=/dev/zero of=/dev/null bs=64m count=1000 & while pkill -INFO -x dd; do sleep 1; done
  • [Wayback] dd progress indicator on OSX

    signal siginfo is coupled to key-combination CTRL-T. No need to use kill, you can just type CTRL-T in the terminal window where dd is running.


Posted in *nix, *nix-tools, Apple, iMac, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, Power User | Leave a Comment »

Need to revisit osquery: SQL powered operating system instrumentation, monitoring, and analytics supports more platforms and also aggregates to central log locations

Posted by jpluimers on 2022/01/18

Almost two years ago, GitHub – facebook/osquery: SQL powered operating system instrumentation, monitoring, and analytics published from the automatic blog queue.

It was in the midst of my rectum cancer treatment, so I was glad the blog queue back then was still about 18 months deep.

This meant I looked into osquery in 2018, which I remember because I needed it on MacOS as I did not want to remember the syntax for MacOS specific commands on getting system information. It also coincides with how much my repository fork was behind: [Wayback: jpluimers/osquery commits/Archive: jpluimers/osquery commits].

Fast forward to now, the breath of systems I’m involved with has widened, so I was glad to see that Kristian Köhntopp mentioned it:

So time to try it again (:

The links he mentioned:

  • [Wayback/Archive] Welcome to osquery – osquery

    osquery is an operating system instrumentation framework for Windows, OS X (macOS), Linux, and FreeBSD. The tools make low-level operating system analytics and monitoring both performant and intuitive.

  • [Wayback/Archive] Welcome to osquery – osquery: High Level Features
    The high-performance and low-footprint distributed host monitoring daemon, osqueryd, allows you to schedule queries to be executed across your entire infrastructure. The daemon takes care of aggregating the query results over time and generates logs which indicate state changes in your infrastructure. You can use this to maintain insight into the security, performance, configuration, and state of your entire infrastructure. osqueryd‘s logging can integrate into your internal log aggregation pipeline, regardless of your technology stack, via a robust plugin architecture.
    The interactive query console, osqueryi, gives you a SQL interface to try out new queries and explore your operating system. With the power of a complete SQL language and dozens of useful tables built-in, osqueryi is an invaluable tool when performing incident response, diagnosing a systems operations problem, troubleshooting a performance issue, etc.
  • [Wayback/Archive] osqueryd (daemon) – osquery
  • [Wayback/Archive] osqueryi (shell) – osquery
  • [Wayback/Archive] Aggregating Logs – osquery
  • [Wayback/Archive] AWS Logging – osquery

Main site: [Wayback/Archive] osquery | Easily ask questions about your Linux, Windows, and macOS infrastructure

Repository: [Wayback/Archive] osquery/osquery: SQL powered operating system instrumentation, monitoring, and analytics.


Posted in *nix, *nix-tools, Apple, Development, DevOps, Facebook, Infrastructure, Mac, Mac OS X / OS X / MacOS, Power User, SocialMedia, Software Development, Windows | Leave a Comment »

Patching ESXi so you can boot a MacOS virtual machine from it

Posted by jpluimers on 2022/01/13

This is totally opposite to yesterday’s Secure Boot post: [Wayback/] shanyungyang/esxi-unlocker: VMware ESXi macOS

macOS Unlocker V3.0.2 for VMware ESXi

1. Introduction

Unlocker 3 for ESXi is designed for VMware ESXi 6.5, 6.7 and 7.0

The patch code carries out the following modifications dependent on the product
being patched:

* Fix vmware-vmx to allow macOS to boot
* Fix libvmkctl to allow vSphere to control the guest

The code is written in Python as it makes the Unlocker easier to run and
maintain on ESXi.

| IMPORTANT:                                                                  |
| ==========                                                                  |
|                                                                             |
| Always uninstall the previous version of the Unlocker before using a new    |
| version. Failure to do this could render VMware unusable.                   |
|                                                                             |

2. Installation
Copy the distribution file to the ESXi host datastore using scp or some other
data transfer system. If you want to use the source version (i.e. from GIT) see
"5. Building" fist.

Decompress the file from the ESXi console or via SSH:

    tar xzvf esxi-unlocker-xxx.tgz

(xxx - will be the version number, for example, 300)

Run the command from the terminal:


Finally reboot the server.

3. Uninstallation
Open the ESXi console or login via SSH and change to the folder where the files were extracted.

Run the command from the terminal:


Finally reboot the server.

4. Notes
A. There is a command added called which can show if the patch is successful. It must be run from a
terminal or SSH session. The output should be:

smcPresent = true
custom.vgz     false   32486592 B

Note: The uncompressed size reported for custom.vgz will vary depending on the ESXi version.

B. The unlocker can be temporarily disabled during boot by editing the boot options and adding "nounlocker".

5. Building
If you want to use a version which is not availbale as a distribution (e.g. the code from "master" branch)
you need to first build the package.

Checkout the repository:

    git clone

(if you don't have git installed you can download ZIP archive from GitHub instead)

Enter the directory and build:
    cd esxi-unlocker

If everything went correctly the ouput should be:

    ESXi-Build for macOS

    Timestamping files...

    Creating unlocker.tgz...

    Creating esxi-unlocker-301.tgz...

The package you need to copy in the example above is esxi-unlocker-301.tgz (NOT unlocker.tgz!).

6. Thanks

Thanks to Zenith432 for originally building the C++ unlocker and Mac Son of Knife
(MSoK) for all the testing and support.

Thanks also to Sam B for finding the solution for ESXi 6 and helping me with
debugging expertise. Sam also wrote the code for patching ESXi ELF files and
modified the unlocker code to run on Python 3 in the ESXi 6.5 environment.

26/09/18 3.0.0 - First release
01/05/20 3.0.1 - Fix for ESXi 7.0
10/18/20 3.0.1 - Fix for ESXi 7.0 U1 (7.0.1)

(c) 2011-2018 Dave Parsons


Posted in Apple, ESXi6, ESXi6.5, ESXi6.7, ESXi7, Mac OS X / OS X / MacOS, Power User, Virtualization, VMware, VMware ESXi | Leave a Comment »

I wish I had known “How to rename multiple files at once on Mac | iMore” ages ago

Posted by jpluimers on 2022/01/04

Coming from a Windows and Linux background, I was used that mass renaming files was a non-stock feature and getting it right usually a pain in the butt.

How glad I was to find out [Wayback] How to rename multiple files at once on Mac | iMore

Believe it or not, it used to be a real pain to batch-rename files on Mac. Times have changed and so have the names of those 15 files.

Prior to OS X Yosemite, there was no simple way to rename multiple files at the same time on the Mac. Some people set up Automator rules. Others tried workarounds to rename files in third-party apps. Finally, Apple realized our heartache and created a much simpler way to rename multiple files at once, and it’s only gotten easier as macOS updates continue. Here’s how to batch-rename files on your Mac.

The only mass-rename I regularly need is fixing typos or OCR errors in filenames: this means replacing certain text with another piece of text.

That’s this easy:

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Posted in Apple, Mac OS X / OS X / MacOS, macOS 10.12 Sierra, macOS 10.13 High Sierra, OS X 10.10 Yosemite, OS X 10.11 El Capitan, Power User | Leave a Comment »

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