https://www.vandenboom.icu/en/categories/article/Recent content in article on NotitiesHugo -- gohugo.ioenTue, 31 Mar 2026 10:00:00 +0100https://www.vandenboom.icu/en/blog/2026-proxmox-windows-server-2022-template-preparation/Tue, 31 Mar 2026 10:00:00 +0100https://www.vandenboom.icu/en/blog/2026-proxmox-windows-server-2022-template-preparation/This guide covers the complete process of preparing a freshly installed Windows Server 2022 VM as a reusable Proxmox template. All future VMs (CA server, member servers, etc.) are cloned from this template, saving significant time and ensuring a consistent baseline across the entire lab. 📄 Download the full guide with screenshots: WS2022-in-Proxmox-Template-Preparation-Guide.docx Overview The full process consists of these steps: Install VirtIO guest drivers Run Windows Update — fully patch the OS Apply performance tweaks Basic housekeeping — timezone, RDP, IE Enhanced Security Sysprep — generalize and shut down Convert to template in Proxmox Warning: Never boot the VM after Sysprep.https://www.vandenboom.icu/en/blog/2026-proxmox-windows-server-2022-vm-creation/Tue, 31 Mar 2026 00:00:00 +0100https://www.vandenboom.icu/en/blog/2026-proxmox-windows-server-2022-vm-creation/This guide documents the complete process of creating a Windows Server 2022 virtual machine in Proxmox VE 9.1.6. It is based on actual lab setup experience and includes all corrections and lessons learned during the build of a home lab. 📄 Download the full guide with screenshots: WS2022-in-Proxmox-VM-Creation-Guide.docx Environment Component Details Proxmox Host macpro2013.local — Mac Pro 2013 Trashcan Proxmox Version 9.https://www.vandenboom.icu/en/blog/2026-windows-server-2022-active-directory-dns-installatie/Fri, 27 Mar 2026 00:00:00 +0100https://www.vandenboom.icu/en/blog/2026-windows-server-2022-active-directory-dns-installatie/In this article I describe step by step how I installed Active Directory Domain Services (AD DS) and DNS on a Windows Server 2022 Datacenter VM in a VMware Fusion lab environment. The result is a fully functional domain controller for the domain lab.local, as the foundation for a Windows DevOps lab. Environment Component Value Virtualisation VMware Fusion (macOS) Guest operating system Windows Server 2022 Datacenter (Desktop Experience) Hostname DC01 Domain name lab.https://www.vandenboom.icu/en/blog/2026-windows-packet-capturing-voor-bijvoorbeeld-een-ldaps-verkeer-analyse/Sun, 18 Jan 2026 18:55:54 +0000https://www.vandenboom.icu/en/blog/2026-windows-packet-capturing-voor-bijvoorbeeld-een-ldaps-verkeer-analyse/Open a Windows Terminal or Command session As Administrator Check existing filters # pktmon filter list Clear all filters # pktmon filter remove Check capture status # pktmon status Add a filter for LDAPS # pktmon filter add -p 636 Start the capture # pktmon start --etw Try to connect again to the LDAP server / If you want to monitor a different port, repeat the command that generates the network traffic.https://www.vandenboom.icu/en/blog/2025-how-to-activate-the-virtualbox-web-based-api-vboxwebsrv/Tue, 01 Jul 2025 08:30:05 +0000https://www.vandenboom.icu/en/blog/2025-how-to-activate-the-virtualbox-web-based-api-vboxwebsrv/VBoxWebSrv is the VirtualBox Web Service that allows you to manage your VirtualBox virtual machines remotely through a web-based API. It is commonly used with tools like phpVirtualBox to provide a full web interface for VM control. By running VBoxWebSrv as a Windows service, you ensure it starts automatically with your system and runs continuously in the background. Installing VBoxWebSrv as a Windows Service with NSSM Download NSSM (Non-Sucking Service Manager) from https://nssm.https://www.vandenboom.icu/en/blog/2025-this-version-of-boot-camp-is-not-intented-for-this-computer/Mon, 28 Apr 2025 16:04:39 +0000https://www.vandenboom.icu/en/blog/2025-this-version-of-boot-camp-is-not-intented-for-this-computer/Dear reader, Recently I updated my Windows version of my MacBook Pro 16,1 BootCamp setup to Windows 11. Now I ran into the problem that my build in keyboard and trackpad were not working anymore. I had to overcome this issue by connecting a separate keyboard and mouse on a USB port. I downloaded the software in the BootCamp utility on macOS that is compatible with my laptop, in this case version: Boot Camp drivers 6.https://www.vandenboom.icu/en/blog/2025-microsoft-onenote-search-not-working-anymore/Thu, 10 Apr 2025 08:48:17 +0000https://www.vandenboom.icu/en/blog/2025-microsoft-onenote-search-not-working-anymore/Close all Microsoft applications Rename the cache folder in: C:\Users\<User>\AppData\Local\Microsoft\OneNote\16.0 Restart OneNote P.S. Don’t worry if the Notebooks seem empty, they will be regenerated.https://www.vandenboom.icu/en/blog/2025-oclp-update-gives-a-circle-with-diagonal-at-boot/Fri, 04 Apr 2025 14:27:55 +0000https://www.vandenboom.icu/en/blog/2025-oclp-update-gives-a-circle-with-diagonal-at-boot/What Mac are you using? iMac (Retina 5K, 27-inch, Late 2015) Model Identifiers: iMac17,1 What version of OCLP are you using? 2.3.1 What OS version do you have installed or are trying to install? Installed: Sequoia 15.3.2 (24D81) What exactly is the problem you are facing? After installing OCLP 2.3.1 to disk my iMac refuses to boot. At boot I press the Option key to get the menu I choose the blue OCLP icon.https://www.vandenboom.icu/en/blog/2025-installing-gitlab-on-docker-in-almalinux-8-10/Sat, 29 Mar 2025 20:21:32 +0000https://www.vandenboom.icu/en/blog/2025-installing-gitlab-on-docker-in-almalinux-8-10/Step 1: Update System $ sudo dnf update $ sudo dnf install epel-release $ sudo /usr/bin/crb enable Step 2: Install Docker from AlmaLinux Repo $ sudo dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo $ sudo dnf remove -y podman podman-docker podman-plugins $ sudo dnf remove -y runc $ sudo dnf clean all $ sudo dnf install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin $ sudo systemctl enable --now docker $ sudo systemctl status docker $ sudo usermod -aG docker $USER Step 3: Logout and back inhttps://www.vandenboom.icu/en/blog/2025-installing-virtualbox-guest-additions-on-almalinux-8-10/Sat, 29 Mar 2025 20:16:41 +0000https://www.vandenboom.icu/en/blog/2025-installing-virtualbox-guest-additions-on-almalinux-8-10/$ sudo dnf update $ sudo reboot (So any new installed kernel will be loaded) $ sudo dnf install gcc kernel-devel kernel-headers make bzip2 perl Go to the VirtualBox Menu > Devices > Insert Guest Additions CD image Automated: Press Run Manual: $ cd /run/media/$USER/VBox_GAs_*/ # Adjust path if needed $ sudo ./VBoxLinuxAdditions.run $ sudo reboot Verification: $ lsmod | grep vbox (Check to see if vboxguest is listed)https://www.vandenboom.icu/en/blog/2025-deskflow-bedien-meerdere-computers-met-1-keyboard-en-muis-voor-macos-windows-en-linux/Mon, 24 Mar 2025 17:57:51 +0000https://www.vandenboom.icu/en/blog/2025-deskflow-bedien-meerdere-computers-met-1-keyboard-en-muis-voor-macos-windows-en-linux/With Deskflow you control multiple computers — macOS, Windows or Linux — using a single mouse and keyboard. It works as a software-based KVM switch (without video) and is sponsored by Synergy. This program is still actively maintained, with an intuitive interface that makes it easy to use. Tip: disable TLS in the settings for a smooth start. Download it via: https://github.com/deskflow/deskflow/releases. Look for the “latest” tag and check all assets for the correct version!https://www.vandenboom.icu/en/blog/2025-installing-oracle-virtualbox-on-ubuntu-linux/Sun, 23 Mar 2025 13:20:53 +0000https://www.vandenboom.icu/en/blog/2025-installing-oracle-virtualbox-on-ubuntu-linux/Try the following steps: $ sudo apt update $ sudo apt upgrade $ sudo apt install curl $ curl -fsSL https://www.virtualbox.org/download/oracle_vbox_2016.asc | sudo gpg –dearmor -o /usr/share/keyrings/virtualbox-archive-keyring.gpg $ echo “deb [arch=amd64 signed-by=/usr/share/keyrings/virtualbox-archive-keyring.gpg] http://download.virtualbox.org/virtualbox/debian noble contrib” | sudo tee /etc/apt/sources.list.d/virtualbox.list $ sudo apt update $ sudo search virtualbox virtualbox/noble-updates 7.0.16-dfsg-2ubuntu1.1 amd64 x86 virtualization solution - base binaries virtualbox-7.0/unknown 7.0.24-167081~Ubuntu~noble amd64 Oracle VM VirtualBox virtualbox-7.1/unknown 7.1.6-167084~Ubuntu~noble amd64 Oracle VirtualBox $ sudo install virtualbox-7.https://www.vandenboom.icu/en/blog/2025-tips-for-using-xrdp-on-ubuntu-linux/Sun, 23 Mar 2025 12:51:59 +0000https://www.vandenboom.icu/en/blog/2025-tips-for-using-xrdp-on-ubuntu-linux/To be able to use XRDP on Ubuntu Linux try the following instructions: $ sudo apt update $ sudo apt upgrade $ sudo apt install xrdp $ echo “gnome-session –session=ubuntu” > ~/.xsession $ echo “export DISPLAY=:10.0” > ~/.bash_profile $ echo “xhost +” > ~/.bash_profile $ ip a Remember write down your IP address of your system and to log out of your graphical user session. Now try to login to your system with a RDP tool.https://www.vandenboom.icu/en/blog/2025-install-microsoft-visual-studio-code-in-linux-from-the-repo/Sat, 22 Mar 2025 22:13:54 +0000https://www.vandenboom.icu/en/blog/2025-install-microsoft-visual-studio-code-in-linux-from-the-repo/Follow the below steps to install Microsoft Visual Studio Code IDE on Linux from its repository: sudo rpm –import https://packages.microsoft.com/keys/microsoft.asc sudo sh -c ‘echo -e “[code]\nname=Visual Studio Code\nbaseurl=https://packages.microsoft.com/yumrepos/vscode\nenabled=1\ngpgcheck=1\ngpgkey=https://packages.microsoft.com/keys/microsoft.asc” > /etc/yum.repos.d/vscode.repo’ sudo dnf install code -yhttps://www.vandenboom.icu/en/blog/2025-use-of-golang-java-c-c-or-rust-a-quick-guide/Sat, 22 Mar 2025 19:32:21 +0000https://www.vandenboom.icu/en/blog/2025-use-of-golang-java-c-c-or-rust-a-quick-guide/For real-time applications, Go and Rust are the top choices due to their lightweight concurrency and memory efficiency. Combine them for a balanced approach: Go for high-level logic and Rust for performance-critical tasks. Use C/C++ for legacy systems and Java for enterprise-level applications where real-time performance is less critical. When using Go, the chance of classic concurrency errors like race conditions, deadlocks, and resource leaks is significantly reduced. This is thanks to Go’s use of channels for safe communication between goroutines and its built-in garbage collector, which works seamlessly with the goroutine scheduler.https://www.vandenboom.icu/en/blog/2025-create-support-on-your-website-for-dark-mode-capability-with-a-subtile-icon/Sat, 15 Feb 2025 21:17:06 +0000https://www.vandenboom.icu/en/blog/2025-create-support-on-your-website-for-dark-mode-capability-with-a-subtile-icon/Dear reader, I would like to refer you to my GitHub page for a nice and simple project enabling the dark mode effect on a website. I want to share this with you so that it can inspire you and enable you to do a similar implementation that you can use on your own website. See: https://github.com/martijnvandenboom/darkmode-test Best regards, Martijn P.S. leave a message I would like to hear from from youhttps://www.vandenboom.icu/en/blog/2025-java-convert-a-variabele-for-it-to-be-printed-in-a-price-format-related-to-country-settings/Sun, 05 Jan 2025 20:09:27 +0000https://www.vandenboom.icu/en/blog/2025-java-convert-a-variabele-for-it-to-be-printed-in-a-price-format-related-to-country-settings/For Dutch Euro use: .getCurrencyInstance(new Locale(“nl”, “NL”)) For Swiss Franc use: .getCurrencyInstance(new Locale(“de”, “CH”)) import java.text.NumberFormat; import java.util.Locale; public class prog_002_variables { public static void main(String[] args){ String message; int year; double prijs; message = "De beste wensen voor: "; year = 2025; prijs = 2.50; // Combine the creation of the Locale and the NumberFormat in one line NumberFormat currencyFormat; currencyFormat = NumberFormat.getCurrencyInstance(new Locale("nl", "NL")); System.out.println(message + year + ", een frikandel kost nu: " + currencyFormat.https://www.vandenboom.icu/en/blog/2025-quick-git-commands-to-add-a-local-repository-in-visual-studio-code-to-github/Fri, 03 Jan 2025 22:23:19 +0000https://www.vandenboom.icu/en/blog/2025-quick-git-commands-to-add-a-local-repository-in-visual-studio-code-to-github/Type in the terminal of Visual Studio Code # git init # git add . # git commit -m “initial commit” Create a new repository on GitHub # git remote add origin <the new .git URL> Example: # git remote add orign https://github.com/martijnvandenboom/Java_tools.git # git push -u origin mainhttps://www.vandenboom.icu/en/blog/2024-zoek-de-naam-van-je-usb-stick-met-een-script/Thu, 18 Jul 2024 07:20:59 +0000https://www.vandenboom.icu/en/blog/2024-zoek-de-naam-van-je-usb-stick-met-een-script/You can use this script to retrieve the name of your USB stick. The name of your USB stick can be used in Apple’s sudo command to create a USB installer. Step 1: Open the Terminal application Step 2: Go to your home directory, type: # cd Step 3: Optionally create a scripts directory, type: # mkdir scripts Step 4: Navigate to the newly created scripts directory, type: # cd scriptshttps://www.vandenboom.icu/en/blog/2024-putting-the-microsoft-efi-boot-files-on-the-efi-partition/Sun, 07 Jul 2024 20:49:33 +0000https://www.vandenboom.icu/en/blog/2024-putting-the-microsoft-efi-boot-files-on-the-efi-partition/Boot into the Windows installer On the first screen press SHIFT + F10 # diskpart # list disk # select disk 0 # list part Look for the Windows partition # select part 3 # assign letter=W # format quick fs=NTFS # list volume Look for the EFI volume # select volume 2 # assign letter=Z # exit # D: Goto the USB installer of Windows # cd D:\sources # dir install* The file install.https://www.vandenboom.icu/en/blog/2024-create-a-usb-refit-boot-disk/Sun, 07 Jul 2024 20:45:53 +0000https://www.vandenboom.icu/en/blog/2024-create-a-usb-refit-boot-disk/# hdiutil convert /path/to/refit-0.14.cdr -format UDRW -o /path/to/refit-0.14.img # diskutil list # diskutil unmountDisk /dev/disk2 # sudo dd if=/path/to/refit-0.14.img.dmg of=/dev/rdisk2 bs=1m Using rdisk2 here seems to speed up things # diskutil eject /dev/disk2https://www.vandenboom.icu/en/blog/2024-refit-installation-to-efi-partition-of-an-imac/Thu, 27 Jun 2024 22:27:46 +0000https://www.vandenboom.icu/en/blog/2024-refit-installation-to-efi-partition-of-an-imac/Follow the steps below to install rEFIt to the EFI partition of an iMac Download rEFIt and copy the efi folder to the /efi folder as explained below Before you do the bless command disable the SIP Boot in recovery mode # csrutil status # csrutil disable # reboot sudo mkdir /efi sudo mount -t msdos /dev/disk0s1 /efi sudo bless --mount /efi --setBoot --file /efi/EFI/refit/refit.efi --labelfile /efi/EFI/refit/refit.vollabelhttps://www.vandenboom.icu/en/blog/2024-ssh-in-remote-machine-with-ssh-keys-and-run-command-in-new-python-3/Wed, 03 Apr 2024 20:20:39 +0000https://www.vandenboom.icu/en/blog/2024-ssh-in-remote-machine-with-ssh-keys-and-run-command-in-new-python-3/To make a script to run remote commands in a client server network. import subprocess def ssh_exec_command(hostname, username, command): ssh_cmd = ['ssh', f'{username}@{hostname}', command] ssh_process = subprocess.Popen( ssh_cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True ) output, error = ssh_process.communicate() if error: print("Error:", error) else: print("Output:", output) # Replace these with your actual credentials and command hostname = 'remote_host_address' username = 'your_username' command = 'ls -l' ssh_exec_command(hostname, username, command)https://www.vandenboom.icu/en/blog/2024-ssh-in-remote-machine-with-ssh-keys-and-run-command-in-old-python/Wed, 03 Apr 2024 20:12:58 +0000https://www.vandenboom.icu/en/blog/2024-ssh-in-remote-machine-with-ssh-keys-and-run-command-in-old-python/In case you have an old legacy system with Python 2 still in use and want to make a script to run certain commands in a client server network. import subprocess def ssh_exec_command(hostname, username, private_key_path, command): ssh_cmd = ['ssh', '-i', private_key_path, '-o', 'StrictHostKeyChecking=no', f'{username}@{hostname}', command] ssh_process = subprocess.Popen( ssh_cmd, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE ) output, error = ssh_process.communicate() if error: print("Error:", error) else: print("Output:", output) # Replace these with your actual credentials and command hostname = 'remote_host_address' username = 'your_username' private_key_path = '/path/to/your/private_key' command = 'ls -l' ssh_exec_command(hostname, username, private_key_path, command)https://www.vandenboom.icu/en/blog/2024-configure-ldap-ipa-server-with-jenkins/Sat, 09 Mar 2024 17:38:50 +0000https://www.vandenboom.icu/en/blog/2024-configure-ldap-ipa-server-with-jenkins/=== Identity, Policy, and Audit (IPA) system === Jenkins 2.319.2 === Dashboard -> Security -> Configure Global Security Server: ldap://<IP_SERVER>:389 root DN: dc=,dc=com User search base cn=users,cn=accounts User search filter uid={0} Group search base cn=groups,cn=accounts Group membership -> Search for LDAP groups containing user -> Group membership filter: (| (member={0}) (uniqueMember={0}) (memberUid={1})) Manager DN: uid=<ADMIN_USER>,cn=users,cn=accounts,dc=,dc=comhttps://www.vandenboom.icu/en/blog/2024-configure-ldap-ipa-server-with-nexus/Sat, 09 Mar 2024 17:37:42 +0000https://www.vandenboom.icu/en/blog/2024-configure-ldap-ipa-server-with-nexus/=== Nexus Sonatype Nexus Repository OSS 3.60.0-02 === LDAP ldap://<IP_SERVER>:389 cn=users,cn=accounts,dc=,dc=com Simple Authentication uid=<ADMIN_USER>,cn=users,cn=accounts,dc=,dc=com Next === Select no template User relative DN = leeg User subtree = unchecked Object class: inetOrgPerson User filter = leeg User ID attribute = uid Real name attribute = cn Email attribute = mail Password attribute = leeg Map LDAP groups as roles = uncheckedhttps://www.vandenboom.icu/en/blog/2024-configure-ldap-ipa-server-with-sonarqube/Sat, 09 Mar 2024 17:35:22 +0000https://www.vandenboom.icu/en/blog/2024-configure-ldap-ipa-server-with-sonarqube/Configure LDAP/IPA Server with Sonarqube === Sonarqube 8.9.6 sonar.properties sonarqube-8.9.6/conf/sonar.properties === sonar.security.realm=LDAP ldap.url=ldap://<IP_SERVER>:389 ldap.bindDn=uid=<ADMIN_USER>,cn=users,cn=accounts,dc=,dc=com ldap.bindPassword= ldap.authentication=simple ldap.user.baseDn=cn=users,cn=accounts,dc=,dc=com # laat volgende default # ldap.user.request= # LDAP user request. (default: (&(objectClass=inetOrgPerson)(uid={login})) ) ldap.group.baseDn=cn=groups,cn=accounts,dc=,dc=com # laat volgende default # ldap.group.request= # LDAP group request (default: (&(objectClass=groupOfUniqueNames)(uniqueMember={dn})) )https://www.vandenboom.icu/en/blog/2024-ldap-ipa-server-command-line-searches/Sat, 09 Mar 2024 17:34:27 +0000https://www.vandenboom.icu/en/blog/2024-ldap-ipa-server-command-line-searches/$ ldapsearch -H ldap://<FQDN_SERVER>/ -b dc=,dc=com -x $ ldapsearch -x -LLL -H ldap:/// -b dc=,dc=com dn $ ldapwhoami -x -H ldap:/// $ ldapsearch -H ldap://<IP_SERVER> -D “uid=<ADMIN_USER>,cn=users,cn=compat,dc=,dc=com” -b “cn=users,cn=accounts,dc=,dc=com” -x -W $ ldapsearch -H ldap://<IP_SERVER> -D “uid=<ADMIN_USER>,cn=users,cn=compat,dc=,dc=com” -b “dc=,dc=com” -x -W -s one “(&(objectClass=organizationalUnit) $ ldapsearch -h <FQDN_SERVER> -D ‘uid=<ADMIN_USER>,cn=users,cn=compat,dc=,dc=com’ -o ldif-wrap=no -b ‘dc=,dc=com’ -W uid=<ADMIN_USER> $ ldapsearch -h <FQDN_SERVER> -D ‘uid=,cn=users,cn=compat,dc=,dc=com’ -o ldif-wrap=no -b ‘dc=,dc=com’ -W uid=https://www.vandenboom.icu/en/blog/2024-ldap-ipa-server-client-installation/Sat, 09 Mar 2024 17:33:26 +0000https://www.vandenboom.icu/en/blog/2024-ldap-ipa-server-client-installation/=== # yum install ipa-client # ipa-client-install –server= –domain= –principal=admin -W # ipa-client-install –server=<ipa-server.example.com> –domain=<example.com> –principal=admin -Whttps://www.vandenboom.icu/en/blog/2024-ldap-ipa-server-installation/Sat, 09 Mar 2024 17:31:40 +0000https://www.vandenboom.icu/en/blog/2024-ldap-ipa-server-installation/=== # yum install ipa-server # ipa-server-install === Hosts file aanpassen De FQDN voor op, daarna pas de aliassen /etc/hosts <IP_SERVER> () Mocht er een alias voor de FQDN staan, dan kun je foutmeldingen krijgen die hier niet meteen aan te relateren zijn.https://www.vandenboom.icu/en/blog/2024-ldap-ipa-server-op-red-hat-enterprise-linux-7/Thu, 15 Feb 2024 10:47:28 +0000https://www.vandenboom.icu/en/blog/2024-ldap-ipa-server-op-red-hat-enterprise-linux-7/If you are using a hosts file, make sure it contains FQDNs and pay close attention to the order in which they appear. Check the hosts file and adjust it if necessary: The FQDN must come first, followed by any aliases. /etc/hosts 10.0.0.1 server1.example.com server1 application1 If an alias is listed before the FQDN, you may encounter error messages that are not immediately traceable to this cause.https://www.vandenboom.icu/en/blog/2024-maak-een-zombie-proces-in-linux-m-b-v-een-c-programma/Wed, 31 Jan 2024 20:54:45 +0000https://www.vandenboom.icu/en/blog/2024-maak-een-zombie-proces-in-linux-m-b-v-een-c-programma/Below is the source code of a C program to create a Zombie process in Linux and analyse it. vim create_zombie_process.c #include <stdlib.h>#include <sys/types.h>#include <unistd.h> int main () { pid_t child_pid; child_pid = fork (); if (child_pid > 0) { sleep (60); } else { exit (0); } return 0; } Compile the C source code into an executable program: gcc create_zombie_process.c Start the program: ./a.out Open a second Terminal and view the process list.https://www.vandenboom.icu/en/blog/2024-bash-script-met-een-succes-of-failed-melding-aan-het-einde-van-de-regel/Wed, 31 Jan 2024 20:18:39 +0000https://www.vandenboom.icu/en/blog/2024-bash-script-met-een-succes-of-failed-melding-aan-het-einde-van-de-regel/See below an example script to display a SUCCESS message in green or a FAILED message in red, right-aligned at the end of the line. #!/bin/bash # Set the message success_message="Your command was successful" failed_message="Your command failed" # Set the "OK" string in green ok="$(tput setaf 2)[SUCCES]$(tput sgr0)" failed="$(tput setaf 1)[FAILED]$(tput sgr0)" # Get the width of the terminal term_width=$(tput cols)+9 # Calculate the number of dots needed success_dots_count=$((term_width - ${#success_message} - ${#ok})) failed_dots_count=$((term_width - ${#failed_message} - ${#failed})) # Create a string of dots for success and failed messages success_dots=$(printf "%0.https://www.vandenboom.icu/en/blog/2024-checkmk-installation-on-rocky-linux-9-3/Tue, 16 Jan 2024 21:13:15 +0000https://www.vandenboom.icu/en/blog/2024-checkmk-installation-on-rocky-linux-9-3/Checkmk installation on Rocky Linux 9.3 dnf install epel-release setsebool -P httpd_can_network_connect 1 firewall-cmd --zone=public --add-service=http --permanent firewall-cmd --reload wget https://download.checkmk.com/checkmk/2.2.0p18/check-mk-raw-2.2.0p18-el9-38.x86_64.rpm yum install check-mk-raw-2.2.0p18-el9-38.x86_64.rpm omd version omd create monitoring omd start monitoring http://localhost.localdomain/monitoring/ user: cmkadmin with password: <given> omd su monitoring (For command line administration of the site.) cmk-passwd cmkadmin (After logging in, you can change the password for cmkadmin with.) (optional) omd status omd sites omd help (optional for after reboot if you get the error: Unable to connect) omd update-apache-config monitoringhttps://www.vandenboom.icu/en/blog/2024-installing-the-virtualbox-guest-additions-on-rocky-linux-9-3/Tue, 16 Jan 2024 21:08:26 +0000https://www.vandenboom.icu/en/blog/2024-installing-the-virtualbox-guest-additions-on-rocky-linux-9-3/Installing the VirtualBox Guest Additions on Rocky Linux 9.3 dnf install epel-release dnf update --refresh dnf update kernel-* reboot (optional) dnf install dkms kernel-devel kernel-headers gcc make bzip2 perl elfutils-libelf-devel rpm -q kernel-devel uname -r Top menu: Devices -> Insert Guest Additions CD-Image Run (optional) cd /run/media/ ./VBoxLinuxAdditions.runhttps://www.vandenboom.icu/en/blog/2024-powershell-computer-resource-monitor-script-with-cpu-percentage-and-advanced-memory-information/Thu, 04 Jan 2024 22:21:38 +0000https://www.vandenboom.icu/en/blog/2024-powershell-computer-resource-monitor-script-with-cpu-percentage-and-advanced-memory-information/PowerShell computer resource monitor script with cpu percentage and advanced memory information PowerShell Resource monitor $app="notepad" $ids = Get-Process $app | Select-Object -Property Id | ForEach-Object {$_.Id} $filedate = Get-Date -format "yyyy-MM-dd" #echo $pids foreach ($id in $ids) { $date = Get-Date -format "yyyy-MM-dd HH:mm:ss" # process CPU information $ProcessId = $id $Process = Get-WmiObject -Query "SELECT * FROM Win32_PerfFormattedData_PerfProc_Process WHERE IDProcess = $ProcessId" $usage = $Process.PercentProcessorTime # process Mem information $TotalMemory = (Get-CimInstance Win32_ComputerSystem).https://www.vandenboom.icu/en/blog/2023-macos-desktop-extended-over-3-schermen/Sun, 26 Nov 2023 15:16:27 +0000https://www.vandenboom.icu/en/blog/2023-macos-desktop-extended-over-3-schermen/In the setup I use I have the following 3 devices: iMac 27" late 2015 with OpenCore Legacy Patcher Sonoma: 14.1.1 MacBook Pro 15" late 2016 with OpenCore Legacy Patcher Sonoma: 14.1.1 iPad 10.2" 7th Gen with iPadOS version: 17.1.1 They are connected to the same WiFi network. Steps: On the iMac go to: System Settings -> Displays Click the plus sign to the right of the Built-in Display Choose under Mirror or Extend to: MacBook Pro Choose under Link keyboard and mouse to: iPad You now see the 3 screens under Displays, but it is not yet extended across all 3 Click on the iPad Choose for the option: “Use as” - select: Extend or mirrored display You now see the same desktop on all 3 devices And you can drag applications from the iMac to the MacBook or the iPadhttps://www.vandenboom.icu/en/blog/2023-multiple-versions-of-java-on-macos/Wed, 27 Sep 2023 17:43:18 +0000https://www.vandenboom.icu/en/blog/2023-multiple-versions-of-java-on-macos/$ ls -al /usr/local/opt/ | grep -i openjdk $ brew install jenv $ jenv add /Library/Java/JavaVirtualMachines/openjdk-17.jdk/Contents/Home/ $ jenv versions $ jenv local 1.8 $ java -version $ jenv global 1.8 $ java -version $ jenv shell 1.8 $ java -version $ jenv versionshttps://www.vandenboom.icu/en/blog/2023-the-linux-mlocate-command-under-macos/Wed, 27 Sep 2023 17:40:13 +0000https://www.vandenboom.icu/en/blog/2023-the-linux-mlocate-command-under-macos/The Linux mlocate command under macOS sudo /usr/libexec/locate.updatedb sudo ln -s /usr/libexec/locate.updatedb /usr/local/bin/updatedbhttps://www.vandenboom.icu/en/blog/2023-sharing-files-with-ms-dos-6-22-in-virtualbox-and-macos/Sun, 17 Sep 2023 12:29:24 +0000https://www.vandenboom.icu/en/blog/2023-sharing-files-with-ms-dos-6-22-in-virtualbox-and-macos/How to create an ISO file of a directory on macOS that can be mounted as a CDROM in MS-DOS 6.22 ? Start Disk Utility on macOS Go to: File -> New Image -> Image from Folder Choose the directory and press Choose Set Image Format to: DVD/CD master and press Save A *.cdr file will be created Go to the command line Cd to the directory with the *.https://www.vandenboom.icu/en/blog/2023-linux-disk-space-information-more-clearly-excluding-the-denied-and-cannot-messages/Tue, 05 Sep 2023 06:23:38 +0000https://www.vandenboom.icu/en/blog/2023-linux-disk-space-information-more-clearly-excluding-the-denied-and-cannot-messages/$ du -hs * 2> >(egrep -iv ‘permission denied|cannot access’) | sort -nhttps://www.vandenboom.icu/en/blog/2023-linux-locate-lost-storage-space-difference-between-results-df-and-du/Tue, 05 Sep 2023 06:18:17 +0000https://www.vandenboom.icu/en/blog/2023-linux-locate-lost-storage-space-difference-between-results-df-and-du/$ lsof | grep -E ‘^COM|deleted’https://www.vandenboom.icu/en/blog/2023-how-to-burn-an-iso-file-to-cd-or-dvd-in-windows/Fri, 21 Jul 2023 17:04:59 +0000https://www.vandenboom.icu/en/blog/2023-how-to-burn-an-iso-file-to-cd-or-dvd-in-windows/In File Explorer right-click on the *.ISO file and choose Properties.Then, click Change from the General tab, choose Windows Explorer, and click OK.Next, save the change by clicking Apply > OK Now right click on the *.ISO file and choose: Burn disc image or on: Show more options to find this.https://www.vandenboom.icu/en/blog/2023-een-website-opslaan-precies-zoals-deze-eruit-ziet/Wed, 05 Jul 2023 18:02:27 +0000https://www.vandenboom.icu/en/blog/2023-een-website-opslaan-precies-zoals-deze-eruit-ziet/Saving a website exactly as it looks (1) With the Microsoft Edge Browser: step 1.: are you on the website you want to save? Or navigate to it. step 2.: click on the 3 dots in the top right of the screen … step 3.: click on: Web capture (with the camera icon) step 4.: choose the option: Capture full page step 5.: click the disk icon (Save) in the top right of the screenhttps://www.vandenboom.icu/en/blog/2023-anoniem-zoeken-op-het-internet-bescherm-je-privacy/Wed, 21 Jun 2023 17:10:45 +0000https://www.vandenboom.icu/en/blog/2023-anoniem-zoeken-op-het-internet-bescherm-je-privacy/Do you want to stay anonymous when searching the Internet? Then use a different web browser. The Tor Browser was specifically developed to stay anonymous. Step 1.: go to the website: https://www.torproject.org/ Step 2.: download the Tor Browser Step 3.: install the new application Please note! Do not change the size of the application window, as this can already reveal information about your identity. The advice: do not do this.https://www.vandenboom.icu/en/blog/2023-microsoft-maakt-office-gratis-beschikbaar-op-de-website/Wed, 21 Jun 2023 16:46:56 +0000https://www.vandenboom.icu/en/blog/2023-microsoft-maakt-office-gratis-beschikbaar-op-de-website/Do you already have a Microsoft account? Step 1.: log in to the website: office.com Step 2.: click on the icon with the 9 dots in the top left of the screen Step 3.: choose the Office app you want to use If you don’t have a Microsoft account yet you can create one for free. Step 1.: go to the website: account.microsoft.com Step 2.: click the sign in buttonhttps://www.vandenboom.icu/en/blog/2023-snelkoppeling-maken-met-een-icoontje-op-het-bureaublad/Wed, 10 May 2023 19:09:51 +0000https://www.vandenboom.icu/en/blog/2023-snelkoppeling-maken-met-een-icoontje-op-het-bureaublad/Part 1: creating the shortcut Go to the website you find useful and want quick access to For example: nu.nl , open in your browser: https:/www.nu.nl Click (with the left mouse button) on the address bar where the website address is shown, it will turn blue. If it does not automatically turn blue, you need to select the address and highlight it yourself Right-click on the blue text and choose: Copy Click the minus sign to minimise the web browser so you can see the desktop Right-click on the desktop and choose: New -> Shortcut Right-click in the location rectangle and choose: Paste Click Next Give the shortcut the name of the website and click: Finish You now have your shortcut Part 2: changing the icon to the website’s logohttps://www.vandenboom.icu/en/blog/2023-al-gehoord-van-chatgpt-vind-antwoorden-op-al-je-moeilijke-vragen/Sun, 30 Apr 2023 13:15:53 +0000https://www.vandenboom.icu/en/blog/2023-al-gehoord-van-chatgpt-vind-antwoorden-op-al-je-moeilijke-vragen/Are you looking for answers to your difficult questions? Questions you just can’t seem to find the answer to? Not even on Google? Get truly direct answers to your questions with ChatGPT. See: https://chat.openai.com You can ask questions such as: Why do we live here on earth? Why did England leave the European Union in Brexit? What is the best thing to do to protect someone and prevent unbearable pain?https://www.vandenboom.icu/en/blog/2023-breng-een-oude-2e-handse-apple-mac-computer-weer-tot-leven-met-opencore-legacy-patcher/Sun, 30 Apr 2023 12:53:36 +0000https://www.vandenboom.icu/en/blog/2023-breng-een-oude-2e-handse-apple-mac-computer-weer-tot-leven-met-opencore-legacy-patcher/Is computing your hobby and have you always wanted to try an Apple Mac? A tip / recommendation is OpenCore Legacy Patcher. See the official website: https://github.com/dortania/OpenCore-Legacy-Patcher/releases And the YouTube channel: https://www.youtube.com/@Mr.Macintosh With this tool you can still use older / second-hand and now cheaper hardware with the latest software. Truly worth trying at least once.https://www.vandenboom.icu/en/blog/2023-maak-een-windows-god-mode-snelkoppeling/Sun, 05 Mar 2023 13:40:14 +0000https://www.vandenboom.icu/en/blog/2023-maak-een-windows-god-mode-snelkoppeling/ Right-click on the Desktop Choose: New -> Folder Name the folder: GodMode.{ED7BA470-8E54-465E-825C-99712043E01C} Open the folder for a huge number of advanced settings The shortcuts in this folder can be copied to, for example, the Desktop for even faster accesshttps://www.vandenboom.icu/en/blog/2023-authomatisch-inloggen-op-een-linux-server-m-b-v-putty-onder-windows/Fri, 17 Feb 2023 14:51:15 +0000https://www.vandenboom.icu/en/blog/2023-authomatisch-inloggen-op-een-linux-server-m-b-v-putty-onder-windows/You can automatically log in to a Linux server on Windows using PuTTY by making use of a key file. Below I explain step by step how to do this. Create a key: start: puttygen.exe Click on: Generate Click on: Save private key Go to PuTTY Configuration -> Session Load a previously created session or create a new one Go to: Connection -> SSH -> Auth -> Private key file for authentication -> Browse Select your file with the private key: *.https://www.vandenboom.icu/en/blog/2023-windows-wachtwoord-veranderen-met-behulp-van-een-snelkoppeling/Thu, 16 Feb 2023 10:56:24 +0000https://www.vandenboom.icu/en/blog/2023-windows-wachtwoord-veranderen-met-behulp-van-een-snelkoppeling/Change your Windows password by using a shortcut on your desktop. (CTRL+ALT+DEL key combination by clicking a shortcut) Right-click on your desktop, choose New and then Shortcut Enter the following command for the item location: C:\Windows\explorer.exe shell:::{2559a1f2-21d7-11d4-bdaf-00c04f60b9f0} Click: Next Give the shortcut a name, for example: Reset password Click: Finishhttps://www.vandenboom.icu/en/blog/2022-installing-virtual-machines-on-macos-monterey-opencore-legacy-patcher/Thu, 01 Dec 2022 21:20:43 +0000https://www.vandenboom.icu/en/blog/2022-installing-virtual-machines-on-macos-monterey-opencore-legacy-patcher/Try Oracle VirtualBox version 6.1.40 the older version. In my home lab the newest version of VirtualBox 7.0.4 did not work due to the error: hv_vm_create() failed: 0xfae94001 (VERR_NEM_INIT_FAILED) In the older version this was not an issue.https://www.vandenboom.icu/en/blog/2022-prevent-opening-windows-11-store-when-typing-the-command-python/Thu, 01 Dec 2022 19:30:38 +0000https://www.vandenboom.icu/en/blog/2022-prevent-opening-windows-11-store-when-typing-the-command-python/Step 1: Open Settings in Windows 11 Step 2: Go to Apps Step 3: Go to Advanced app settings Step 4: Go to App execution aliases Step 5: Disable the option for python.exe and python3.exehttps://www.vandenboom.icu/en/blog/2022-dependencies-van-python-bij-de-installatie-van-oracle-virtualbox-op-windows-11/Thu, 01 Dec 2022 19:24:55 +0000https://www.vandenboom.icu/en/blog/2022-dependencies-van-python-bij-de-installatie-van-oracle-virtualbox-op-windows-11/Step 1: install Python Step 2: add both the scripts folder and its parent folder to the path Step 3: CMD> pip install pywin32https://www.vandenboom.icu/en/blog/2022-imac-as-an-extened-display-with-windows/Mon, 31 Oct 2022 17:55:56 +0000https://www.vandenboom.icu/en/blog/2022-imac-as-an-extened-display-with-windows/Install Windows on your iMac and use the software utility spacedesk. Such a simple solution to turn any iMac into a second (or even a third or more) display to extended your desktop.https://www.vandenboom.icu/en/blog/2022-concourse-starting-automatically-at-boot-with-systemctl-service/Thu, 16 Jun 2022 18:55:47 +0000https://www.vandenboom.icu/en/blog/2022-concourse-starting-automatically-at-boot-with-systemctl-service//home/martijn/Downloads/concourse $ curl -LO https://concourse-ci.org/docker-compose.yml $ cat /etc/systemd/system/docker-compose-concourse.service [Unit] Description=Docker Compose Application Service for Concourse Requires=docker.service After=docker.service [Service] Type=oneshot RemainAfterExit=yes WorkingDirectory=/home/martijn/Downloads/concourse ExecStart=/usr/bin/docker-compose up -d ExecStop=/usr/bin/docker-compose down TimeoutStartSec=0 [Install] WantedBy=multi-user.targethttps://www.vandenboom.icu/en/blog/2022-concourse-persistent-postgresql-database-in-docker/Thu, 16 Jun 2022 18:50:41 +0000https://www.vandenboom.icu/en/blog/2022-concourse-persistent-postgresql-database-in-docker/$ sudo docker-compose stop concourse-db $ sudo docker ps $ sudo docker cp -a <docker postgresql database id>:/database .\ $ vim docker-compose.yml image: postgres volumes: \["./database:/database"] environment: $ sudo docker-compose up -d --no-deps concourse-dbhttps://www.vandenboom.icu/en/blog/2022-cookies-opruimen-bij-het-afsluiten-van-je-webbrowser/Thu, 02 Jun 2022 09:41:34 +0000https://www.vandenboom.icu/en/blog/2022-cookies-opruimen-bij-het-afsluiten-van-je-webbrowser/ Google Chrome: https://youtu.be/FAKQyjzLXrA Microsoft Edge: https://youtu.be/nj3eNmNeip4 Safari on iPad: https://youtu.be/dymKWea_600https://www.vandenboom.icu/en/blog/2022-stel-de-versie-van-de-python-interpreter-in-voor-de-extensie-code-runner-in-vscodium/Sun, 03 Apr 2022 19:55:44 +0000https://www.vandenboom.icu/en/blog/2022-stel-de-versie-van-de-python-interpreter-in-voor-de-extensie-code-runner-in-vscodium/# File name: version_used.py # This prints the version of Python being used by the Code Runner extension in VSCodium # Set by going to: File -> Preferences -> Settings -> Search Settings -> code-runner.executorMap -> Edit in settings.json # "python": "/bin/python3.9 -u", # To run this script press the little play button on the top right in the editor import sys print(sys.version)https://www.vandenboom.icu/en/blog/2022-installeer-python-3-9-op-ubuntu-linux/Sun, 03 Apr 2022 18:55:18 +0000https://www.vandenboom.icu/en/blog/2022-installeer-python-3-9-op-ubuntu-linux/$ sudo apt install software-properties-common $ sudo add-apt-repository ppa:deadsnakes/ppa $ sudo apt update $ sudo apt install python3.9 $ python3.9 –versionhttps://www.vandenboom.icu/en/blog/2022-installeer-de-editor-vscodium-op-ubuntu-linux/Sun, 03 Apr 2022 14:22:24 +0000https://www.vandenboom.icu/en/blog/2022-installeer-de-editor-vscodium-op-ubuntu-linux/$ wget -qO - https://gitlab.com/paulcarroty/vscodium-deb-rpm-repo/raw/master/pub.gpg | sudo apt-key add - $ sudo echo ‘deb https://vscodium.c7.ee/debs/ vscodium main’ | sudo tee –append /etc/apt/sources.list.d/vscodium.list $ sudo apt update $ sudo apt install codiumhttps://www.vandenboom.icu/en/blog/2022-installeer-de-google-chrome-web-browser-op-ubuntu-linux/Sun, 03 Apr 2022 11:51:54 +0000https://www.vandenboom.icu/en/blog/2022-installeer-de-google-chrome-web-browser-op-ubuntu-linux/$ wget -q -O - https://dl.google.com/linux/linux_signing_key.pub | sudo apt-key add - $ sudo sh -c ‘echo “deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main” » /etc/apt/sources.list.d/google-chrome.list’ $ sudo apt update $ sudo apt install google-chrome-stablehttps://www.vandenboom.icu/en/blog/2022-nieuwe-content-voor-je-website-met-een-webpagina/Fri, 25 Feb 2022 11:44:45 +0000https://www.vandenboom.icu/en/blog/2022-nieuwe-content-voor-je-website-met-een-webpagina/Add Netlify CMS to your website to add new content via a web page instead of the command line.https://www.vandenboom.icu/en/blog/2022-nieuw-leven-in-een-oude-apple-computer-imac-macbook/Fri, 25 Feb 2022 11:09:02 +0000https://www.vandenboom.icu/en/blog/2022-nieuw-leven-in-een-oude-apple-computer-imac-macbook/Install the VirtualBox application and run a virtual machine inside it with the latest version of Linux or Windows. In many cases this can solve problems with browsing the internet — for example, making it possible to visit websites that no longer work in the old Apple environment.