clear_cache

# #!/bin/bash
# # set -e

# # Yêu cầu quyền sudo nếu không phải root
# if [[ $EUID -ne 0 ]]; then
#    echo "⚠️  This script must be run as root (sudo)" 
#    exec sudo "$0" "$@"
#    exit 1
# fi

# CHROOT="build/chroot"
# echo "🧹 Đang dọn sạch chroot: $CHROOT"


# # Gỡ mount còn tồn tại
# echo "🔄 Gỡ tất cả mount trong $CHROOT nếu còn..."
# sudo mount | grep "$CHROOT" | awk '{print $3}' | sort -r | xargs -r sudo umount -lf

# # cập nhật lại dns
# cat > "$CHROOT/etc/resolv.conf" <<EOF
# nameserver 8.8.8.8
# nameserver 8.8.4.4
# EOF

# # cập nhật lại host
# cat > "/etc/hosts" <<EOF
# 127.0.0.1 localhost
# 127.0.1.1 MiniOS
# EOF

# # Dọn dẹp các vùng không cần thiết
# sudo rm -rf $CHROOT/tmp/*
# sudo rm -rf $CHROOT/var/tmp/*
# sudo rm -rf $CHROOT/var/log/*
# sudo rm -rf $CHROOT/var/log/journal/*
# sudo rm -rf $CHROOT/var/cache/*
# sudo rm -rf $CHROOT/var/spool/*
# sudo rm -rf $CHROOT/var/mail/*
# sudo rm -rf $CHROOT/var/backups/*
# sudo rm -rf $CHROOT/var/opt/*
# sudo rm -rf $CHROOT/var/local/*
# sudo rm -rf $CHROOT/etc/cloud $CHROOT/var/lib/cloud $CHROOT/var/run/cloud-init
# sudo rm -rf $CHROOT/var/log/cloud-init*
# sudo rm -f $CHROOT/root/.bash_history
# sudo rm -f $CHROOT/home/*/.bash_history

# # Dọn PID/socket
# sudo find $CHROOT/var/lock -type f -delete
# sudo find $CHROOT/var/run -name '*.pid' -delete
# sudo find $CHROOT/var/run -name '*.lock' -delete

# # Tạo lại cấu trúc thư mục thiết yếu
# echo "🧱 Tạo lại cấu trúc /var tối thiểu..."
# sudo mkdir -p $CHROOT/var/{cache,lib,log,mail,opt,spool,tmp,local,backups}
# sudo mkdir -p $CHROOT/var/run
# sudo mkdir -p $CHROOT/var/lock
# sudo chmod 1777 $CHROOT/var/tmp
# sudo chmod 1777 $CHROOT/var/lock
# [ -L "$CHROOT/var/run" ] || sudo ln -sf /run $CHROOT/var/run
# [ -L "$CHROOT/var/lock" ] || sudo ln -sf /run/lock $CHROOT/var/lock

# # Cho dpkg và apt nếu cần
# sudo mkdir -p $CHROOT/var/lib/dpkg
# sudo mkdir -p $CHROOT/var/lib/apt/lists
# sudo mkdir -p $CHROOT/var/lib/systemd
# sudo mkdir -p $CHROOT/var/lib/landscape
# sudo touch $CHROOT/var/lib/dpkg/status
# sudo touch $CHROOT/var/lib/dpkg/available

# echo "✅ Dọn sạch và tái tạo chroot xong!"