sync.sh

#!/bin/bash

sync_or_copy() {
  local src_path=$1
  local dest_path=$2

  if [ -d "$src_path" ]; then
    rsync -a --delete "$src_path/" "$dest_path/"
  elif [ -f "$src_path" ]; then
    cp "$src_path" "$dest_path"
  else
    rm -rf "$dest_path"
  fi
}

# Portage
PACKAGE_FILES=(
  make.conf
  package.use
  package.accept_keywords
  package.mask
  package.unmask
  package.license
)
for f in "${PACKAGE_FILES[@]}"; do
  sync_or_copy "/etc/portage/$f" "$(pwd)/etc/portage/$f"
done

sync_or_copy /etc/eselect/repository.conf "$(pwd)/etc/eselect/repository.conf"
sync_or_copy /etc/portage/repos.conf "$(pwd)/etc/portage/repos.conf"
sync_or_copy /var/lib/portage/world "$(pwd)/var/lib/portage/world"

# cfg
sync_or_copy /etc/cfg-update.conf "$(pwd)/etc/cfg-update.conf"

# Grub
sync_or_copy /etc/default/grub "$(pwd)/etc/default"

# Console
sync_or_copy /etc/vconsole.conf "$(pwd)/etc/vconsole.conf"

# Kernel config
sync_or_copy "/usr/src/linux-$(uname -r)/.config" "$(pwd)/usr/src/linux/.config"

# Kernel modules
rsync -a --delete /etc/modules-load.d/ "$(pwd)/etc/modules-load.d/"

# fstab
sync_or_copy /etc/fstab "$(pwd)/etc/fstab"

# Name Service Switch configuration
sync_or_copy /etc/nsswitch.conf "$(pwd)/etc/nsswitch.conf"

# avahi
sync_or_copy /etc/avahi/avahi-daemon.conf "$(pwd)/etc/avahi/avahi-daemon.conf"

# font config
sync_or_copy /etc/fonts/local.conf "$(pwd)/etc/fonts/local.conf"

# pipewire
sync_or_copy /etc/pipewire/pipewire.conf "$(pwd)/etc/pipewire/pipewire.conf"

# pam
sync_or_copy /etc/pam.d/login "$(pwd)/etc/pam.d/login"

# CUPS
sync_or_copy /etc/cups/cupsd.conf "$(pwd)/etc/cups/cupsd.conf"