From d237e32c3db5634ff475da273bebdd8289409d48 Mon Sep 17 00:00:00 2001
From: Gary Wang <git@blumia.net>
Date: Wed, 26 Mar 2025 17:46:46 +0800
Subject: [PATCH] a minimized terminal live iso

---
 .gitignore      |  2 +
 mkiso-debian.sh | 97 +++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 mkiso-debian.sh

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9044376
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+build-*/
+*.iso
\ No newline at end of file
diff --git a/mkiso-debian.sh b/mkiso-debian.sh
new file mode 100644
index 0000000..f0d4c52
--- /dev/null
+++ b/mkiso-debian.sh
@@ -0,0 +1,97 @@
+#!/bin/bash
+
+function mount_rootfs() {
+    mkdir -p chroot/dev chroot/dev/pts chroot/proc chroot/sys chroot/run
+    sudo mount --bind /dev chroot/dev
+    sudo mount --bind /dev/pts chroot/dev/pts
+    sudo mount --bind /proc chroot/proc
+    sudo mount --bind /sys chroot/sys
+    sudo mount --bind /run chroot/run
+}
+
+function unmount_rootfs() {
+    sudo umount chroot/dev/pts
+    sudo umount chroot/dev
+    sudo umount chroot/proc
+    sudo umount chroot/sys
+    sudo umount chroot/run
+}
+
+function chroot_cmd() {
+    sudo env DEBIAN_FRONTEND=noninteractive chroot chroot "$@"
+}
+
+function chroot_apt() {
+    chroot_cmd apt "$@"
+}
+
+function install_iso_build_deps() {
+    sudo apt install -y debootstrap squashfs-tools syslinux xorriso p7zip-full
+}
+
+function debootstrap_base() {
+    sudo debootstrap --arch=amd64 testing chroot https://mirrors.tuna.tsinghua.edu.cn/debian/
+}
+
+function update_sourcelists() {
+    echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian/ testing main contrib non-free non-free-firmware" | sudo tee chroot/etc/apt/sources.list
+    echo "deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ testing main contrib non-free non-free-firmware" | sudo tee -a chroot/etc/apt/sources.list
+}
+
+function chroot_install_base_packages() {
+    chroot_apt update
+    chroot_apt upgrade -y
+    chroot_apt install -y zsh
+    chroot_apt install -y live-boot live-config-systemd --no-install-recommends
+    # chroot_apt install -y lxqt-core sddm-theme-debian-elarun
+    chroot_apt install -y linux-image-amd64
+}
+
+function chroot_create_live_user() {
+    chroot_cmd useradd -m -s /bin/bash live
+    echo "live:live" | chroot_cmd chpasswd
+}
+
+function make_bootable() {
+    cp "$(ls -1t chroot/boot/vmlinuz-* | head -n 1)" isoroot/vmlinuz
+    cp "$(ls -1t chroot/boot/initrd.img-* | head -n 1)" isoroot/initrd
+    mkdir isoroot/isolinux
+    cp /usr/lib/ISOLINUX/isolinux.bin isoroot/isolinux
+    cp /usr/lib/syslinux/modules/bios/ldlinux.c32 isoroot/isolinux
+    cp ../isolinux.cfg isoroot/isolinux/isolinux.cfg
+    cat > isoroot/isolinux/isolinux.cfg <<EOL
+DEFAULT live
+LABEL live
+    MENU LABEL ^Boot Live System
+    KERNEL /vmlinuz
+    APPEND initrd=/initrd boot=live components
+EOL
+
+}
+
+function create_iso() {
+    xorriso -as mkisofs -o ../debian-live.iso -isohybrid-mbr /usr/lib/ISOLINUX/isohdpfx.bin \
+        -c isolinux/boot.cat -b isolinux/isolinux.bin -no-emul-boot \
+        -exclude chroot \
+        -boot-load-size 4 -boot-info-table \
+        ./isoroot/
+    7z l ../debian-live.iso
+}
+
+function main() {
+    set -e
+    install_iso_build_deps
+
+    mkdir chroot
+    debootstrap_base
+    update_sourcelists
+    mount_rootfs
+    chroot_install_base_packages
+    chroot_create_live_user
+    unmount_rootfs
+
+    mkdir -p isoroot/live
+    sudo mksquashfs chroot/ isoroot/live/filesystem.squashfs -comp xz -e boot
+    make_bootable
+    create_iso
+}