296 lines
6.7 KiB
Bash
296 lines
6.7 KiB
Bash
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#!/bin/bash
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#SUBVOLS_DEFAULT=("@home" "@root" "@srv" "@opt" "@local" "@cache" "@containers" "@libvirt" \
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# "@machines" "@portables" "@log" "@spool" "@tmp" "@www" "@swap" "@snapshots")
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declare -rA SUBVOLS_DEFAULT=(
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["@home"]="home"
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["@root"]="root"
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["@srv"]="srv"
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["@opt"]="opt"
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["@local"]="usr/local"
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["@cache"]="var/cache"
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["@containers"]="var/lib/containers"
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["@libvirt"]="var/lib/libvirt/images"
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["@machines"]="var/lib/machines"
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["@portables"]="var/lib/portables"
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["@log"]="var/log"
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["@spool"]="var/spool"
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["@tmp"]="var/tmp"
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["@www"]="var/www"
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["@swap"]="swap"
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["@snapshots"]=".snapshots"
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)
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function show_help() {
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echo "Usage: $0 <root> <boot> <efi> [<options>...]"
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echo ""
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echo "Positional Arguments:"
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echo "<root> Root Partition used for LUKS or BtrFS filesystem"
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echo "<boot> Boot Partition or @boot for subvolume in BtrFS"
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echo "<efi> ESP Partition for booting"
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echo ""
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echo "Options:"
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echo "-h, --help Help on this tool."
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echo "-e, --encryption Enable LUKS encryption."
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echo "-s, --swap Enable Swap/Hibernation support."
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echo "-d, --debug Enable DEBUG mode for testing."
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exit 0
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}
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function create_luks() {
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if [[ "$DEBUG" ]]; then
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local cmd="echo"
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else
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local cmd=""
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echo "WARNING: Not in Debug mode, exiting now"
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exit 254
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fi
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${cmd} cryptsetup --cipher aes-xts-plain64 --hash sha512 --use-random --verify-passphrase luksFormat "$RootPart"
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${cmd} cryptsetup luksOpen "$RootPart" luksvol
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}
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function create_subvolumes() {
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local -a subvols=("@")
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if [[ "$DEBUG" ]]; then
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local cmd="echo"
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else
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local cmd=""
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echo "WARNING: Not in Debug mode, exiting now"
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exit 254
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fi
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if [[ "$BootPart" == "@boot" ]]; then
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subvols+=("@boot")
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fi
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subvols+=(${!SUBVOLS_DEFAULT[@]})
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${cmd} mount "$RootPart" /mnt
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for subvol in "${subvols[@]}"
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do
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${cmd} btrfs subvolume create /mnt/"$subvol"
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done
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${cmd} umount "$RootPart" /mnt
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}
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function get_hibernate_size() {
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echo "$(free --giga | awk '/^Mem:/{print $2}')"
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}
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function prepare_target() {
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local subvol
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if [[ "$DEBUG" ]]; then
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local cmd="echo"
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else
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local cmd=""
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echo "WARNING: Not in Debug mode, exiting now"
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exit 254
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fi
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${cmd} mkdir /target
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${cmd} mount -o noatime,space_cache=v2,ssd,subvol=@ "$RootPart" /target
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for subvol in "${!SUBVOLS_DEFAULT[@]}"
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do
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${cmd} mkdir -p /target/"${SUBVOLS_DEFAULT[$subvol]}"
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done
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#${cmd} mkdir -p /target/{boot,home,root,srv,opt,.snapshots,usr/local}
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#${cmd} mkdir -p /target/{var/lib/containers,var/lib/libvirt/images,var/lib/machines,var/lib/portables}
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#${cmd} mkdir -p /target/{var/cache,var/log,var/spool,var/tmp,var/www}
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if [[ "$BootPart" == "@boot" ]]; then
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${cmd} mount -o noatime,space_cache=v2,ssd,subvol=@boot "$RootPart" /target/boot
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else
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${cmd} mount "$BootPart" /target/boot
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fi
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for subvol in "${!SUBVOLS_DEFAULT[@]}"
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do
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${cmd} mount -o noatime,space_cache=v2,ssd,subvol="$subvol" "$RootPart" /target/"${SUBVOLS_DEFAULT[$subvol]}"
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done
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${cmd} mkdir -p /target/boot/efi
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${cmd} mount "$EFIPart" /target/boot/efi
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if [[ "$SWAP" ]]; then
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${cmd} mkdir -p /target/swap
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${cmd} mount -o noatime,ssd,subvol=@swap "$RootPart" /target/swap
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${cmd} btrfs filesystem mkswapfile --size "$(get_hibernate_size)g" --uuid clear /target/swap/hibernate.swp
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fi
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}
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function expert_step() {
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local UUID PART_ENTRY_UUID
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local SwapUUID SwapOffset
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if [[ "$DEBUG" ]]; then
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local cmd="echo"
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else
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local cmd=""
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echo "WARNING: Not in Debug mode, exiting now"
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exit 254
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fi
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${cmd} apt install arch-install-scripts
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if [[ "$DEBUG" ]]; then
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echo "genfstab -U /target >> /target/etc/genfstab"
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else
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genfstab -U /target >> /target/etc/genfstab
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fi
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if [[ "$ENCRYPTION" ]]; then
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eval "$(blkid -p --output export "$RootPart" | grep UUID)"
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if [[ "$DEBUG" ]]; then
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echo "echo \"luksvol UUID=$UUID none luks\" >> /target/etc/crypttab"
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else
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echo "luksvol UUID=$UUID none luks" >> /target/etc/crypttab
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fi
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fi
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if [[ -f /target/swap/hibernate.swp ]]; then
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if [[ "$DEBUG" ]]; then
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echo "echo \"/swap/hibernate.swp none swap defaults 0 0\" >> /target/etc/fstab"
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else
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echo "/swap/hibernate.swp none swap defaults 0 0" >> /target/etc/fstab
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fi
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SwapUUID=$(grep btrfs /target/etc/fstab | head -n1 | cut -f1)
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SwapOffset=$(btrfs inspect-internal map-swapfile -r /target/swap/hibernate.swp)
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${cmd} sed -i "/^GRUB_CMDLINE_LINUX_DEFAULT=/ s/\(\"[^\"]*\)$/ resume=UUID=${SwapUUID} resume_offset=${SwapOffset}&/" /target/etc/default/grub.d/50_lmde.cfg
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fi
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}
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function show_options() {
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echo "Root Partition: $RootPart"
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echo "Boot Partition: $BootPart"
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echo "EFI Partition: $EFIPart"
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if [[ "$ENCRYPTION" ]]; then
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echo "Encryption: Enabled"
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else
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echo "Encryption: Disabled"
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fi
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if [[ "$SWAP" ]]; then
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echo "Swap: Enabled"
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else
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echo "Swap: Disabled"
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fi
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if [[ "$DEBUG" ]]; then
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echo "Debug: Enabled"
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else
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echo "Debug: Disabled"
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fi
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echo
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}
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function install_normal() {
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show_options
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read -rsn1 -p"Pre-Installation: To proceed, press enter to continue." proceed
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echo
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if [[ "$proceed" != "" ]]; then
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echo "Aborting."
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exit 1
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fi
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if [[ "$ENCRYPTION" ]]; then
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echo
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echo "Initiallizing LUKSv2 on ${RootPart}:"
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create_luks
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fi
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echo
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echo "Preparing Subvolumes..."
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create_subvolumes
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echo
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echo "Preparing Installation Target..."
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prepare_target
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echo
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echo "Ready for installation! Run a terminal and start the following:"
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echo "sudo live-installer-expert-mode"
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echo
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echo "Once it's at the expert mode step, re-run this command with --expert"
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}
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function install_expert() {
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show_options
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read -rsn1 -p"Expert-Installation: To proceed, press enter to continue." proceed
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echo
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if [[ "$proceed" != "" ]]; then
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echo "Aborting."
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exit 1
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fi
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echo
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echo "Running Expert-Mode Installation Steps..."
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expert_step
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}
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declare -a POSITIONAL_ARGS=()
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declare INSTALL_MODE="normal"
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while [[ $# -gt 0 ]]; do
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case $1 in
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-h|--help)
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show_help
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exit 0
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;;
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-e|--encryption)
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ENCRYPTION=true
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shift
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;;
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-s|--swap)
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SWAP=true
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shift
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;;
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-d|--debug)
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DEBUG=true
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shift
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;;
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--expert)
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INSTALL_MODE=expert
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shift
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;;
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*)
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POSITIONAL_ARGS+=("$1") # save positional arg
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shift
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;;
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esac
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done
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set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters
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RootPart="$1"
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BootPart="$2"
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EFIPart="$3"
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if [[ -z "$RootPart" || -z "$BootPart" || -z "$EFIPart" ]]; then
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echo "ERROR: Invalid parameters. See --help for help"
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exit 3
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else
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if [[ "$ENCRYPTION" && "$BootPart" == "@boot" ]]; then
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echo "While encryption is enabled, using @boot subvolume will cause issues."
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echo "Please prepare and set boot volume for /boot while using encryption."
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exit 4
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fi
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case "$INSTALL_MODE" in
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normal) install_normal;;
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expert) install_expert;;
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*)
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echo "Error, unknown installation mode detected."
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exit 3
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;;
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esac
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fi
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