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#!/bin/bash
# Created By: srdusr
# Created On: Mon 19 Feb 2025 14:18:00 PM CAT
# Project: Backup and restore system files to/from home extras (system dotfiles) directory
# Dependencies: None
# NOTE: The backups will be stored in the ~/extras directory, preserving the original file structure. Run as sudo or be prompted for password
# Example usage:
# To backup a specific file: root.sh --backup /some_directory/some_file.conf
# To restore a specific file: root.sh --restore ~/extras/some_directory/some_file.conf
# To restore all files: root.sh --restore
#
# Use $SUDO_USER to get the original user when run with sudo, or fall back to the current user if not
BASE_DIR="/home/${SUDO_USER:-$(whoami)}/extras"
if [ "$EUID" -eq 0 ] && [ "$SUDO_USER" = "" ]; then
echo "You are running this script directly as root, not through sudo!"
exit 1
fi
if [ "$EUID" -ne 0 ]; then
echo "Elevating to sudo..."
exec sudo "$0" "$@" # Re-run the script with sudo
fi
# Create directories if they do not exist
create_directory() {
local dir=$1
if [ ! -d "$dir" ]; then
echo "Creating directory: $dir"
mkdir -p "$dir"
else
echo "Directory already exists: $dir"
fi
}
# Backup files
backup_to_extras() {
local src=$1
# Ensure the file or directory exists
if [ -e "$src" ]; then
# Strip the leading / from src to avoid double slashes
local stripped_src="${src#/}"
# Determine the destination path
dest_dir="$BASE_DIR/$(dirname "$stripped_src")" # Get the directory part of the source
dest_file="$BASE_DIR/$stripped_src" # Get the full destination file path
# Debug: Print paths
echo "Source file: $src"
echo "Destination directory: $dest_dir"
echo "Destination file: $dest_file"
# Create the necessary directories in extras if they don't exist
create_directory "$dest_dir"
# Backup the file to extras
echo "Backing up $src to $dest_file"
cp -p "$src" "$dest_file"
# Set permission to user
chown "$SUDO_USER:$SUDO_USER" "$dest_file"
echo "Backup of $src completed."
else
echo "Error: The file or directory '$src' does not exist."
fi
}
# Restore files
restore_from_extras() {
local src=$1
# Ensure the file or directory exists in extras
if [ -e "$src" ]; then
# Strip the leading / from src to avoid double slashes
local stripped_src="${src#/}"
# Determine the destination path
dest_dir="/$(dirname "$stripped_src")" # Get the directory part of the source
dest_file="/$stripped_src" # Get the full destination file path
# Debug: Print paths
echo "Source file: $src"
echo "Destination directory: $dest_dir"
echo "Destination file: $dest_file"
# Create the necessary directories in the system if they don't exist
create_directory "$dest_dir"
# Backup the file if it exists before restoring
if [ -e "$dest_file" ]; then
echo "File $dest_file exists, creating a backup..."
mv "$dest_file" "$dest_file.bak"
echo "Backup created at $dest_file.bak"
fi
# Restore the file from extras
echo "Restoring $src to $dest_file"
cp -p "$BASE_DIR/$stripped_src" "$dest_file"
# Set permissions for the restored file
chmod 644 "$dest_file"
echo "Restore of $src completed."
else
echo "Error: The file or directory '$src' does not exist in extras."
fi
}
# Restore all files from extras
restore_all_from_extras() {
echo "Restoring all files and directories from extras..."
# Loop over all files and directories in BASE_DIR and restore them
find "$BASE_DIR" -type f | while read -r file; do
restore_from_extras "$file"
done
echo "Restore completed."
}
# Backup system files based on user input
if [ "$1" == "--backup" ]; then
if [ "$2" = "" ]; then
echo "Error: Please specify the file or directory to backup."
exit 1
fi
# Perform the backup
echo "Backing up system files to extras..."
backup_to_extras "$2"
echo "Backup completed."
# Restore system files based on user input
elif [ "$1" == "--restore" ]; then
if [ "$2" = "" ]; then
# If no specific file is provided, restore everything
restore_all_from_extras
else
# Restore a specific file or directory
echo "Restoring system files from extras..."
restore_from_extras "$2"
echo "Restore completed."
fi
else
echo "Invalid option. Use '--backup' to backup or '--restore' to restore."
fi
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