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dotfiles/system-backup.sh

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#!/bin/bash
set -e
TIMESTAMP=$(date +%Y%m%d-%H%M%S)
BACKUP_FILE="system-backup-${TIMESTAMP}.json"
show_help() {
echo "Usage: $0 [OPTION]"
echo ""
echo "Options:"
echo " -b, --backup [filename] Create backup (default: system-backup-TIMESTAMP.json)"
echo " -r, --restore <filename> Restore from backup file"
echo " -h, --help Show this help message"
}
backup() {
local filename="${1:-$BACKUP_FILE}"
echo "Creating backup..."
# Get package lists (filtering out any integers/counts)
local pacman_pkgs=$(paru -Qqen | grep -v '^[0-9]*$')
local aur_pkgs=$(paru -Qqem | grep -v '^[0-9]*$')
# Get systemd units (filter headers, footers, and integers)
local system_units=$(systemctl list-unit-files --state=enabled --no-pager --no-legend | \
awk '{print $1}' | grep -E '\.(service|timer|socket|target|path|mount)$')
local user_units=$(systemctl --user list-unit-files --state=enabled --no-pager --no-legend | \
awk '{print $1}' | grep -E '\.(service|timer|socket|target|path|mount)$')
# Get flatpak list
local flatpak_pkgs=""
if command -v flatpak &> /dev/null; then
flatpak_pkgs=$(flatpak list --app --columns=application | tail -n +1 | grep -v '^[0-9]*$')
fi
# Build JSON
jq -n \
--arg timestamp "$TIMESTAMP" \
--arg pacman "$pacman_pkgs" \
--arg aur "$aur_pkgs" \
--arg system "$system_units" \
--arg user "$user_units" \
--arg flatpak "$flatpak_pkgs" \
'{
timestamp: $timestamp,
packages: {
pacman: ($pacman | split("\n") | map(select(length > 0))),
aur: ($aur | split("\n") | map(select(length > 0)))
},
systemd: {
system: ($system | split("\n") | map(select(length > 0))),
user: ($user | split("\n") | map(select(length > 0)))
},
flatpak: ($flatpak | split("\n") | map(select(length > 0)))
}' > "$filename"
echo "Backup created: $filename"
}
restore() {
local filename="$1"
if [[ -z "$filename" ]]; then
echo "Error: No backup file specified"
show_help
exit 1
fi
if [[ ! -f "$filename" ]]; then
echo "Error: Backup file $filename not found"
exit 1
fi
# Ensure jq is installed
if ! command -v jq &> /dev/null; then
echo "Installing jq..."
sudo pacman -S --noconfirm jq
fi
echo "Restoring from $filename..."
# Install pacman packages
echo "Installing official repository packages..."
jq -r '.packages.pacman[]' "$filename" | paru -S --needed --noconfirm -
# Install AUR packages
echo "Installing AUR packages..."
jq -r '.packages.aur[]' "$filename" | paru -S --needed --noconfirm -
# Enable system units
echo "Enabling system units..."
jq -r '.systemd.system[]' "$filename" | while read -r unit; do
[[ -n "$unit" ]] && sudo systemctl enable "$unit" 2>/dev/null || echo "Skipping $unit"
done
# Enable user units
echo "Enabling user units..."
jq -r '.systemd.user[]' "$filename" | while read -r unit; do
[[ -n "$unit" ]] && systemctl --user enable "$unit" 2>/dev/null || echo "Skipping $unit"
done
# Install flatpak packages
if command -v flatpak &> /dev/null; then
echo "Installing flatpak packages..."
jq -r '.flatpak[]' "$filename" | while read -r pkg; do
[[ -n "$pkg" ]] && flatpak install -y "$pkg" 2>/dev/null || echo "Skipping $pkg"
done
else
echo "Flatpak not installed, skipping flatpak packages"
fi
echo "Restore complete."
}
case "$1" in
-b|--backup)
backup "$2"
;;
-r|--restore)
restore "$2"
;;
-h|--help)
show_help
;;
*)
show_help
exit 1
;;
esac