diff --git a/config files/apt/etc/apt/apt.conf.d/99parallel-fetch b/config files/apt/etc/apt/apt.conf.d/99parallel-fetch
new file mode 100644
index 0000000..2b5383b
--- /dev/null
+++ b/config files/apt/etc/apt/apt.conf.d/99parallel-fetch	
@@ -0,0 +1,2 @@
+APT::Acquire::Queue-Mode "access";
+APT::Acquire::Retries 3;
diff --git a/config files/debian/etc/apt/preferences.d/debian-release-pinning b/config files/debian/etc/apt/preferences.d/debian-release-pinning
new file mode 100644
index 0000000..2f4fbf1
--- /dev/null
+++ b/config files/debian/etc/apt/preferences.d/debian-release-pinning	
@@ -0,0 +1,11 @@
+Package: *
+Pin: release a=stable
+Pin-Priority: 990
+
+Package: *
+Pin: release a=testing
+Pin-Priority: 490
+
+Package: *
+Pin: release a=unstable
+Pin-Priority: -1
diff --git a/config files/debian/etc/apt/preferences.d/firefox-pinning b/config files/debian/etc/apt/preferences.d/firefox-pinning
new file mode 100644
index 0000000..5d7c977
--- /dev/null
+++ b/config files/debian/etc/apt/preferences.d/firefox-pinning	
@@ -0,0 +1,3 @@
+Package: firefox
+Pin: release a=unstable
+Pin-Priority: 990
diff --git a/examples/archlinux/enable-hibernation-from-swapfile.sh b/examples/archlinux/enable-hibernation-from-swapfile.sh
new file mode 100644
index 0000000..0cb2f21
--- /dev/null
+++ b/examples/archlinux/enable-hibernation-from-swapfile.sh
@@ -0,0 +1,49 @@
+#!/bin/sh
+
+# enable hibernation from a swapfile on btrfs
+
+# source:
+#  - https://wiki.archlinux.org/title/Power_management/Suspend_and_hibernate
+
+sudo mkdir /swap
+
+# disable copy-on-write and compression on the directory
+sudo chattr -R +C /swap
+sudo btrfs property set /swap compression none
+
+# create the swapfile
+sudo fallocate -l 32GiB /swap/swapfile
+sudo chmod -R 600 /swap
+sudo mkswap --label swap /swap/swapfile
+sudo swapon /swap/swapfile
+
+# configure swappiness
+sudo nano /etc/sysctl.d/swappiness
+sudo sysctl --load=/etc/sysctl.d/swappiness
+
+# identify the swap device
+# value is to be used for the resume=UUID= kernel parameter
+sudo findmnt -no UUID -T /swap/swapfile
+
+# identify the file offset
+# value is to be used for the resume_offset= kernel parameter
+curl --location --output /tmp/btrfs_map_physical.c https://raw.githubusercontent.com/osandov/osandov-linux/master/scripts/btrfs_map_physical.c
+gcc -O2 -o /tmp/btrfs_map_physical /tmp/btrfs_map_physical.c
+chmod a+x /tmp/btrfs_map_physical
+physical_offset=$(sudo /tmp/btrfs_map_physical /swap/swapfile | awk '$1==0 {print $NF}')  # last column of the line starting with 0
+resume_offset=$(( ${physical_offset} / $(getconf PAGESIZE) ))
+
+# configure the bootloader
+# GRUB_CMDLINE_LINUX_DEFAULT="quiet cryptdevice=UUID=... resume=UUID=bac7930a-924d-4e9d-83eb-ad6ce5a8100a resume_offset=1865170"
+sudo nano /etc/default/grub
+sudo grub-mkconfig -o /boot/grub/grub.cfg
+
+# configure the mkinitcpio
+# not needed if using the systemd hook
+# add resume after filesystems: HOOKS=(base ... filesystems resume fsck)
+sudo nano /etc/mkinitcpio.conf
+mkinitcpio -p linux
+
+# reboot
+
+# check with `systemctl hibernate`
diff --git a/examples/gentoo/install.virtualbox.sh b/examples/gentoo/install.virtualbox.sh
new file mode 100755
index 0000000..887b2ef
--- /dev/null
+++ b/examples/gentoo/install.virtualbox.sh
@@ -0,0 +1,173 @@
+#!/usr/bin/env sh
+
+# sources
+# - https://wiki.gentoo.org/wiki/Handbook:AMD64
+# - https://wiki.gentoo.org/wiki/Localization/Guide
+
+# start with gentoo live, with UEFI
+
+# /etc/init.d/sshd start
+# passwd $complicated_password
+
+sgdisk --zap-all /dev/sda
+sgdisk --clear /dev/sda
+
+sgdisk --new 1:2048:+128M /dev/sda
+sgdisk --typecode 1:ef00 /dev/sda
+sgdisk --change-name 1:EFI /dev/sda
+mkfs.vfat -F 32 -n EFI /dev/sda1
+
+sgdisk --new 2:+0M: /dev/sda
+sgdisk --change-name 2:ROOT /dev/sda
+mkfs.ext4 -F -L System /dev/sda2
+
+mkdir -p /mnt/gentoo
+mount /dev/sda2 /mnt/gentoo
+mkdir -p /mnt/gentoo/boot
+chattr +i /mnt/gentoo/boot
+mount /dev/sda1 /mnt/gentoo/boot
+
+hwclock --systohc
+ntpd -q -g
+
+cd /mnt/gentoo
+
+wget https://ftp.snt.utwente.nl/pub/os/linux/gentoo/releases/amd64/autobuilds/current-stage3-amd64-hardened/stage3-amd64-hardened-20210623T214504Z.tar.xz
+tar -xpf stage3-amd64-*.tar.xz
+rm -f stage3-amd64-*.tar.xz
+
+wget https://ftp.snt.utwente.nl/pub/os/linux/gentoo/snapshots/portage-latest.tar.xz
+tar -xf portage-latest.tar.xz -C /mnt/gentoo/usr
+rm -f portage-latest.tar.xz
+
+mount --types proc /proc /mnt/gentoo/proc
+mount --rbind /sys /mnt/gentoo/sys
+mount --make-rslave /mnt/gentoo/sys
+mount --rbind /dev /mnt/gentoo/dev
+mount --make-rslave /mnt/gentoo/dev
+
+cp /etc/resolv.conf /mnt/gentoo/etc
+chroot /mnt/gentoo /bin/bash
+source /etc/profile
+export PS1="(chroot) ${PS1}"
+ping -c 3 google.com
+
+fallocate -l 1G /swapfile   # or sudo dd if=/dev/zero of=/swapfile bs=1024 count=1048576
+chmod 600 /swapfile
+mkswap /swapfile
+swapon /swapfile
+
+mkdir -p /etc/portage/package.{accept_keywords,license,use}
+
+JOBS="$(nproc)"
+LOAD_AVERAGE="$(python -c "print($(nproc)*0.9)")"
+cat >> /etc/portage/make.conf <<EOF
+
+AUTOCLEAN="yes"
+FEATURES="candy compress-build-logs parallel-install"
+GRUB_PLATFORMS="efi-64"
+L10N="en-US"
+LINGUAS="en_US"
+USE="hardened"
+
+# use all the cpu threads but keep load average to 90%
+# see https://wiki.gentoo.org/wiki/EMERGE_DEFAULT_OPTS
+EMERGE_DEFAULT_OPTS="--jobs $JOBS --load-average $LOAD_AVERAGE"
+MAKEOPTS="--jobs $JOBS --load-average $LOAD_AVERAGE"
+EOF
+
+emerge --sync
+
+echo "Europe/Amsterdam" > /etc/timezone
+emerge --config sys-libs/timezone-data
+
+echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen
+locale-gen
+eselect locale set "en_US.utf8"
+env-update && source /etc/profile && export PS1="(chroot) ${PS1}"
+
+cat > /etc/fstab <<EOF
+# The root filesystem should have a pass number of either 0 or 1.
+# All other filesystems should have a pass number of 0 or greater than 1.
+#
+# NOTE: If your BOOT partition is ReiserFS, add the notail option to opts.
+#
+# See the manpage fstab(5) for more information.
+#
+# <fs>        <mountpoint>  <type>  <opts>           <dump/pass>
+
+LABEL=EFI     /boot         vfat    noauto,noatime   1 2
+LABEL=System  /             ext4    discard,noatime  0 1
+
+/swapfile     swap          swap    defaults         0 0
+#tmpfs        /run          tmpfs   rw,nodev,nosuid  0 0
+EOF
+
+echo 'hostname="gentoo"' > /etc/conf.d/hostname
+
+echo "sys-kernel/linux-firmware  linux-fw-redistributable no-source-code" > /etc/portage/package.license/kernel
+emerge \
+  --quiet --verbose \
+  sys-kernel/gentoo-sources sys-kernel/genkernel
+eselect kernel set 1
+genkernel all
+
+emerge \
+  --quiet --verbose \
+  --noreplace \
+  net-misc/netifrc
+echo 'config_enp0s3="dhcp"' > /etc/conf.d/net
+sed -i.bak \
+  -e 's/^127.0.0.1.*/127.0.0.1\tlocalhost gentoo/' \
+  -e 's/^::1.*/::1\t\tlocalhost gentoo/' \
+  /etc/hosts
+cd /etc/init.d
+ln -s net.lo net.enp0s3
+rc-update add net.enp0s3 default
+cd -
+
+sed -i.bak 's/^enforce=everyone$/enforce=none/' /etc/security/passwdqc.conf
+emerge \
+  --quiet --verbose \
+  app-admin/sudo
+echo '%wheel ALL=(ALL) ALL' | tee /etc/sudoers.d/wheel
+useradd -m -G users,wheel,audio -s /bin/bash mek
+passwd mek
+passwd -l root
+
+emerge \
+  --quiet --verbose \
+  app-admin/sysklogd
+rc-update add sysklogd default
+
+emerge \
+  --quiet --verbose \
+  sys-process/cronie
+rc-update add cronie default
+
+emerge \
+  --quiet --verbose \
+  net-misc/dhcpcd
+rc-update add dhcpcd default
+
+rc-update add sshd default
+
+echo 'sys-process/bpytop ~amd64' | tee /etc/portage/package.accept_keywords/bpytop
+emerge \
+  --quiet --verbose \
+  bpytop \
+  nfs-utils \
+  samba \
+  tmux
+
+emerge \
+  --quiet --verbose \
+  sys-boot/grub:2
+grub-install --target=x86_64-efi --efi-directory=/boot
+grub-mkconfig -o /boot/grub/grub.cfg
+
+exit
+
+cd
+umount -lR /mnt/gentoo
+reboot
diff --git a/examples/gentoo/post-install.virtualbox.sh b/examples/gentoo/post-install.virtualbox.sh
new file mode 100755
index 0000000..234088a
--- /dev/null
+++ b/examples/gentoo/post-install.virtualbox.sh
@@ -0,0 +1,48 @@
+#!/usr/bin/env sh
+
+eselect profile set "default/linux/amd64/17.1/desktop/plasma"
+emerge --sync
+emerge \
+  --quiet --verbose \
+  --update --deep --with-bdeps=y \
+  --changed-use --newuse \
+  @world
+
+
+cat | tee /etc/portage/package.use/kde <<EOF
+kde-plasma/powerdevil brightness-control
+
+# include gtk support
+# exclude vault
+# discover not working for some reason to be checked
+# qrcode not working for some reason to be checked
+kde-plasma/plasma-meta grub gtk -crypt
+EOF
+emerge \
+  --quiet --verbose \
+  app-cdr/dolphin-plugins-mountiso \
+  kde-apps/ark \
+  kde-apps/dolphin-plugins-git \
+  kde-apps/kdecore-meta \
+  kde-plasma/plasma-meta
+rc-update add dbus default
+rc-update add elogind default
+cat > /home/mek/.xinitrc <<EOF
+#!/bin/sh
+exec dbus-launch --exit-with-session startplasma-wayland
+EOF
+
+cp /etc/pam.d/sddm-greeter /etc/pam.d/sddm-greeter.backup
+echo "session optional pam_elogind.so" >> /etc/pam.d/sddm-greeter
+sed -i.backup 's/^DISPLAYMANAGER=.*$/DISPLAYMANAGER="sddm"/' /etc/conf.d/display-manager
+rc-update add display-manager default
+
+echo | tee /etc/portage/package.use/firefox-bin <<EOF
+# required by media-sound/pulseaudio-13.0-r1::gentoo[alsa-plugin,alsa]
+# required by www-client/firefox-bin-89.0.2::gentoo[pulseaudio]
+# required by www-client/firefox-bin (argument)
+media-plugins/alsa-plugins pulseaudio
+EOF
+emerge \
+  --quiet --verbose \
+  www-client/firefox-bin
diff --git a/scripts/boinc-static-frequency-for-niced-loads.sh b/scripts/boinc-static-frequency-for-niced-loads.sh
new file mode 100755
index 0000000..5f81377
--- /dev/null
+++ b/scripts/boinc-static-frequency-for-niced-loads.sh
@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# sources:
+# - https://wiki.archlinux.org/?title=BOINC#Laptop_overheating_and_battery_duration_reduction
+
+if ( ! cpupower frequency-info --governors | grep --quiet ondemand )
+then
+	echo "ERROR: no ondemand governor available. Aborting."
+fi
+
+sudo gpasswd -a boinc video
+xhost si:localuser:boinc
+
+sudo cpupower frequency-set --governor ondemand
+echo 1 | sudo tee /sys/devices/system/cpu/cpufreq/ondemand/ignore_nice_load
+sudo systemctl start boinc-client.service
diff --git a/scripts/git/change-the-default-branch-from-master-to-main.sh b/scripts/git/change-the-default-branch-from-master-to-main.sh
new file mode 100755
index 0000000..e0f183c
--- /dev/null
+++ b/scripts/git/change-the-default-branch-from-master-to-main.sh
@@ -0,0 +1,19 @@
+#!/bin/sh
+
+# sources:
+# - https://stevenmortimer.com/5-steps-to-change-github-default-branch-from-master-to-main/
+
+# create main branch locally, taking the history from master
+git branch --move master main
+
+# push the new local main branch to the remote repo (GitHub) 
+git push --set-upstream origin main
+
+# switch the current HEAD to the main branch
+git symbolic-ref refs/remotes/origin/HEAD refs/remotes/origin/main
+
+# change the default branch on GitHub to main
+# https://docs.github.com/en/github/administering-a-repository/setting-the-default-branch
+
+# delete the master branch on the remote
+git push origin --delete master
diff --git a/scripts/vscodium.install.apt.sh b/scripts/vscodium.install.apt.sh
new file mode 100755
index 0000000..b94d0ea
--- /dev/null
+++ b/scripts/vscodium.install.apt.sh
@@ -0,0 +1,7 @@
+#!/usr/bin/env sh
+
+export LC_ALL='C'
+
+wget -qO - https://gitlab.com/paulcarroty/vscodium-deb-rpm-repo/raw/master/pub.gpg | gpg --dearmor | sudo dd of=/usr/share/keyrings/vscodium-archive-keyring.gpg
+echo 'deb [signed-by=/usr/share/keyrings/vscodium-archive-keyring.gpg] https://paulcarroty.gitlab.io/vscodium-deb-rpm-repo/debs vscodium main' | sudo tee /etc/apt/sources.list.d/vscodium.list
+sudo apt update && sudo apt install codium
diff --git a/scripts/windows/wsl.install.ps1 b/scripts/windows/wsl.install.ps1
new file mode 100644
index 0000000..6224cf5
--- /dev/null
+++ b/scripts/windows/wsl.install.ps1
@@ -0,0 +1,2 @@
+powershell Start-Process powershell -Verb runAs
+wsl --install