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debi
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pull/8/head
Bohan Yang 5 years ago committed by GitHub
parent b4b1216235
commit b6b56045a2
2 changed files with 156 additions and 194 deletions
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  1. 27
      README.md
  2. 321
      netboot.sh

27
README.md
Unescape View File

@ -18,33 +18,38 @@ This script is used to re-install VPS to **Debian 9 (stretch) or 10 (buster)** w
## Available Options ## Available Options
- `--preset` [`china`, `cloud`] - `--preset` (`china`/`cloud`)
- `--ip` - `--ip`
- `--netmask` - `--netmask`
- `--gateway` - `--gateway`
- `--dns "8.8.8.8 8.8.4.4"` - `--dns '8.8.8.8 8.8.4.4'`
- `--hostname debian` - `--hostname debian`
- `--eth` Disable Consistent Network Device Naming
- `--installer-password` - `--installer-password`
- `--authorized-keys-url` - `--authorized-keys-url`
- `--mirror-protocol http` [`http`, `https`, `ftp`] - `--suite buster`
- `--mirror-protocol http` (`http`/`https`/`ftp`)
- `--mirror-host deb.debian.org` - `--mirror-host deb.debian.org`
- `--mirror-directory /debian` - `--mirror-directory /debian`
- `--suite buster` - `--security-repository http://security.debian.org/debian-security`
- `--skip-account-setup` - `--skip-account-setup`
- `--username debian` - `--username debian`
- `--password` - `--password`
- `--timezone UTC` https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List - `--timezone UTC` https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List
- `--ntp 0.debian.pool.ntp.org` - `--ntp 0.debian.pool.ntp.org`
- `--skip-partitioning` - `--skip-partitioning`
- `--partitioning-method regular`
- `--disk` - `--disk`
- `--partitioning-method` - `--gpt`
- `--efi`
- `--filesystem ext4` - `--filesystem ext4`
- `--kernel` Choose an package for the kernel image
- `--cloud-kernel` Choose `linux-image-cloud-amd64` as the kernel image
- `--no-install-recommends` - `--no-install-recommends`
- `--kernel` Specify another package for kernel image, e.g. `linux-image-cloud-amd64`
- `--security-repository http://security.debian.org/debian-security`
- `--install` - `--install`
- `--upgrade full-upgrade` [`none`, `safe-upgrade`, `full-upgrade`] - `--safe-upgrade`
- `--full-upgrade`
- `--eth` Disable *Consistent Network Device Naming* to get `eth0`, `eth1`, etc. back
- `--bbr`
- `--power-off` - `--power-off`
- `--architecture` - `--architecture`
- `--boot-partition` - `--boot-partition`
@ -54,7 +59,7 @@ This script is used to re-install VPS to **Debian 9 (stretch) or 10 (buster)** w
### `china` ### `china`
- `--dns "223.5.5.5 223.6.6.6"` - `--dns '223.5.5.5 223.6.6.6'`
- `--protocol https` - `--protocol https`
- `--mirror mirrors.aliyun.com` - `--mirror mirrors.aliyun.com`
- `--security true` - `--security true`
@ -62,6 +67,8 @@ This script is used to re-install VPS to **Debian 9 (stretch) or 10 (buster)** w
### `cloud` ### `cloud`
- `--dns '1.1.1.1 1.0.0.1'`
- `--protocol https` - `--protocol https`
- `--mirror deb.debian.org` - `--mirror deb.debian.org`
- `--security true` - `--security true`
- `--ntp 0.debian.pool.ntp.org`

321
netboot.sh
Unescape View File

@ -1,62 +1,82 @@
#!/usr/bin/env bash #!/bin/bash
set -eu set -eu
_err() { _err() {
printf 'Error: %s.\n' "$1" 1>&2 printf 'Error: %s.\n' "$1" 1>&2
exit 1
} }
command_exists() { _command_exists() {
command -v "$1" >/dev/null 2>&1 command -v "$1" >/dev/null 2>&1
} }
late_command=
_late_command() { _late_command() {
[ -z "$late_command" ] && late_command='true' [ -z "$late_command" ] && late_command='true'
late_command="$late_command; $1" late_command="$late_command; $1"
} }
late_command= _prompt_password() {
preset= [ -z "$password" ] && read -rs -p 'Password: ' password
}
ip= ip=
netmask= netmask=
gateway= gateway=
dns= dns='8.8.8.8 8.8.4.4'
hostname= hostname=
kernel_params= installer_ssh=false
installer_ssh=
installer_password= installer_password=
authorized_keys_url= authorized_keys_url=
mirror_protocol= suite=buster
mirror_host= mirror_protocol=http
mirror_directory= mirror_host=deb.debian.org
suite= mirror_directory=/debian
skip_account_setup= security_repository=http://security.debian.org/debian-security
username= skip_account_setup=false
username=debian
password= password=
timezone= cleartext_password=false
ntp= timezone=UTC
skip_partitioning= ntp=0.debian.pool.ntp.org
disk= skip_partitioning=false
partitioning_method=regular partitioning_method=regular
disk=
gpt=false
efi=false
filesystem=ext4 filesystem=ext4
kernel= kernel=
security_repository= install_recommends=true
install= install=
upgrade= upgrade=
power_off= kernel_params=
bbr=false
power_off=false
architecture= architecture=
boot_partition= boot_directory=/boot/
dry_run= dry_run=false
bbr=
cleartext_password=
gpt=
install_recommends=true
efi=false
while [ $# -gt 0 ]; do while [ $# -gt 0 ]; do
case $1 in case $1 in
--preset) --preset)
preset=$2 case "$2" in
china)
dns='223.5.5.5 223.6.6.6'
mirror_protocol=https
mirror_host=mirrors.aliyun.com
ntp=ntp.aliyun.com
security_repository=true
;;
cloud)
dns='1.1.1.1 1.0.0.1'
mirror_protocol=https
mirror_host=deb.debian.org
security_repository=true
;;
*)
_err "No such preset $2"
esac
shift shift
;; ;;
--ip) --ip)
@ -79,9 +99,6 @@ while [ $# -gt 0 ]; do
hostname=$2 hostname=$2
shift shift
;; ;;
--eth)
kernel_params=' net.ifnames=0 biosdevname=0'
;;
--installer-password) --installer-password)
installer_ssh=true installer_ssh=true
installer_password=$2 installer_password=$2
@ -92,6 +109,10 @@ while [ $# -gt 0 ]; do
authorized_keys_url=$2 authorized_keys_url=$2
shift shift
;; ;;
--suite)
suite=$2
shift
;;
--mirror-protocol) --mirror-protocol)
mirror_protocol=$2 mirror_protocol=$2
shift shift
@ -104,8 +125,8 @@ while [ $# -gt 0 ]; do
mirror_directory=${2%/} mirror_directory=${2%/}
shift shift
;; ;;
--suite) --security-repository)
suite=$2 security_repository=$2
shift shift
;; ;;
--skip-account-setup) --skip-account-setup)
@ -130,13 +151,19 @@ while [ $# -gt 0 ]; do
--skip-partitioning) --skip-partitioning)
skip_partitioning=true skip_partitioning=true
;; ;;
--partitioning-method)
partitioning_method=$2
shift
;;
--disk) --disk)
disk=$2 disk=$2
shift shift
;; ;;
--partitioning-method) --gpt)
partitioning_method=$2 gpt=true
shift ;;
--efi)
efi=true
;; ;;
--filesystem) --filesystem)
filesystem=$2 filesystem=$2
@ -146,18 +173,30 @@ while [ $# -gt 0 ]; do
kernel=$2 kernel=$2
shift shift
;; ;;
--security-repository) --cloud-kernel)
security_repository=$2 kernel=linux-image-cloud-amd64
shift ;;
--no-install-recommends)
install_recommends=false
;; ;;
--install) --install)
install=$2 install=$2
shift shift
;; ;;
--upgrade) --safe-upgrade)
upgrade=$2 upgrade=safe-upgrade
shift shift
;; ;;
--full-upgrade)
upgrade=full-upgrade
shift
;;
--eth)
kernel_params=' net.ifnames=0 biosdevname=0'
;;
--bbr)
bbr=true
;;
--power-off) --power-off)
power_off=true power_off=true
;; ;;
@ -166,62 +205,25 @@ while [ $# -gt 0 ]; do
shift shift
;; ;;
--boot-partition) --boot-partition)
boot_partition=true boot_directory=/
;; ;;
--dry-run) --dry-run)
dry_run=true dry_run=true
;; ;;
--bbr)
bbr=true
;;
--gpt)
gpt=true
;;
--no-install-recommends)
install_recommends=false
;;
--efi)
efi=true
;;
*) *)
_err "Illegal option $1" _err "Illegal option $1"
exit 1
esac esac
shift shift
done done
if [ -n "$preset" ]; then
case "$preset" in
china)
dns=${dns:-223.5.5.5 223.6.6.6}
mirror_protocol=${mirror_protocol:-https}
mirror_host=${mirror_host:-mirrors.aliyun.com}
ntp=${ntp:-ntp.aliyun.com}
security_repository=${security_repository:-true}
;;
cloud)
mirror_protocol=${mirror_protocol:-https}
mirror_host=${mirror_host:-deb.debian.org}
security_repository=${security_repository:-true}
;;
*)
_err "No such preset $preset"
exit 1
esac
fi
suite=${suite:-buster}
installer="debian-$suite" installer="debian-$suite"
installer_directory="/boot/$installer" installer_directory="/boot/$installer"
save_preseed="cat" save_preseed='cat'
if [ "$dry_run" != true ]; then if [ "$dry_run" != true ]; then
user="$(id -un 2>/dev/null || true)" user="$(id -un 2>/dev/null || true)"
if [ "$user" != root ]; then [ "$user" != root ] && _err 'root privilege is required'
_err 'root privilege is required'
exit 1
fi
rm -rf "$installer_directory" rm -rf "$installer_directory"
mkdir -p "$installer_directory" mkdir -p "$installer_directory"
@ -229,7 +231,7 @@ if [ "$dry_run" != true ]; then
save_preseed='tee -a preseed.cfg' save_preseed='tee -a preseed.cfg'
fi fi
$save_preseed << EOF $save_preseed << 'EOF'
# Localization # Localization
d-i debian-installer/locale string en_US.UTF-8 d-i debian-installer/locale string en_US.UTF-8
@ -240,24 +242,16 @@ d-i keyboard-configuration/xkb-keymap select us
d-i netcfg/choose_interface select auto d-i netcfg/choose_interface select auto
EOF EOF
dns=${dns:-8.8.8.8 8.8.4.4}
if [ -n "$ip" ]; then if [ -n "$ip" ]; then
echo 'd-i netcfg/disable_autoconfig boolean true' | $save_preseed echo 'd-i netcfg/disable_autoconfig boolean true' | $save_preseed
echo "d-i netcfg/get_ipaddress string $ip" | $save_preseed echo "d-i netcfg/get_ipaddress string $ip" | $save_preseed
if [ -n "$netmask" ]; then [ -n "$netmask" ] && echo "d-i netcfg/get_netmask string $netmask" | $save_preseed
echo "d-i netcfg/get_netmask string $netmask" | $save_preseed [ -n "$gateway" ] && echo "d-i netcfg/get_gateway string $gateway" | $save_preseed
fi [ -n "$dns" ] && echo "d-i netcfg/get_nameservers string $dns" | $save_preseed
if [ -n "$gateway" ]; then
echo "d-i netcfg/get_gateway string $gateway" | $save_preseed
fi
if [ -n "$dns" ]; then
echo "d-i netcfg/get_nameservers string $dns" | $save_preseed
fi
echo 'd-i netcfg/confirm_static boolean true' | $save_preseed echo 'd-i netcfg/confirm_static boolean true' | $save_preseed
fi fi
$save_preseed << EOF $save_preseed << 'EOF'
d-i netcfg/get_hostname string debian d-i netcfg/get_hostname string debian
d-i netcfg/get_domain string d-i netcfg/get_domain string
EOF EOF
@ -269,13 +263,14 @@ fi
echo 'd-i hw-detect/load_firmware boolean true' | $save_preseed echo 'd-i hw-detect/load_firmware boolean true' | $save_preseed
if [ "$installer_ssh" = true ]; then if [ "$installer_ssh" = true ]; then
$save_preseed << EOF $save_preseed << 'EOF'
# Network console # Network console
d-i anna/choose_modules string network-console d-i anna/choose_modules string network-console
d-i preseed/early_command string anna-install network-console d-i preseed/early_command string anna-install network-console
EOF EOF
if [ -n "$authorized_keys_url" ]; then if [ -n "$authorized_keys_url" ]; then
_late_command 'sed -ri "s/^#?PasswordAuthentication .+/PasswordAuthentication no/" /etc/ssh/sshd_config' _late_command 'sed -ri "s/^#?PasswordAuthentication .+/PasswordAuthentication no/" /etc/ssh/sshd_config'
$save_preseed << EOF $save_preseed << EOF
@ -289,13 +284,10 @@ d-i network-console/password password $installer_password
d-i network-console/password-again password $installer_password d-i network-console/password-again password $installer_password
EOF EOF
fi fi
echo 'd-i network-console/start select Continue' | $save_preseed echo 'd-i network-console/start select Continue' | $save_preseed
fi fi
mirror_protocol=${mirror_protocol:-http}
mirror_host=${mirror_host:-deb.debian.org}
mirror_directory=${mirror_directory:-/debian}
$save_preseed << EOF $save_preseed << EOF
# Mirror settings # Mirror settings
@ -310,20 +302,16 @@ d-i mirror/udeb/suite string $suite
EOF EOF
if [ "$skip_account_setup" != true ]; then if [ "$skip_account_setup" != true ]; then
username=${username:-debian} if _command_exists mkpasswd; then
if command_exists mkpasswd; then
if [ -z "$password" ]; then if [ -z "$password" ]; then
password="$(mkpasswd -m sha-512)" password="$(mkpasswd -m sha-512)"
else else
password="$(mkpasswd -m sha-512 "$password")" password="$(mkpasswd -m sha-512 "$password")"
fi fi
elif command_exists busybox && busybox mkpasswd --help >/dev/null 2>&1; then elif _command_exists busybox && busybox mkpasswd --help >/dev/null 2>&1; then
if [ -z "$password" ]; then _prompt_password
read -rs -p 'Password: ' password
fi
password="$(busybox mkpasswd -m sha512 "$password")" password="$(busybox mkpasswd -m sha512 "$password")"
elif command_exists python3; then elif _command_exists python3; then
if [ -z "$password" ]; then if [ -z "$password" ]; then
password="$(python3 -c 'import crypt, getpass; print(crypt.crypt(getpass.getpass(), crypt.mksalt(crypt.METHOD_SHA512)))')" password="$(python3 -c 'import crypt, getpass; print(crypt.crypt(getpass.getpass(), crypt.mksalt(crypt.METHOD_SHA512)))')"
else else
@ -331,12 +319,10 @@ if [ "$skip_account_setup" != true ]; then
fi fi
else else
cleartext_password=true cleartext_password=true
if [ -z "$password" ]; then _prompt_password
read -rs -p 'Password: ' password
fi
fi fi
$save_preseed << EOF $save_preseed << 'EOF'
# Account setup # Account setup
@ -348,10 +334,12 @@ EOF
else else
_late_command "mkdir -pm 700 /root/.ssh && busybox wget -qO /root/.ssh/authorized_keys \"$authorized_keys_url\"" _late_command "mkdir -pm 700 /root/.ssh && busybox wget -qO /root/.ssh/authorized_keys \"$authorized_keys_url\""
fi fi
$save_preseed << EOF
$save_preseed << 'EOF'
d-i passwd/root-login boolean true d-i passwd/root-login boolean true
d-i passwd/make-user boolean false d-i passwd/make-user boolean false
EOF EOF
if [ "$cleartext_password" = true ]; then if [ "$cleartext_password" = true ]; then
$save_preseed << EOF $save_preseed << EOF
d-i passwd/root-password password $password d-i passwd/root-password password $password
@ -362,15 +350,18 @@ EOF
fi fi
else else
_late_command 'sed -ri "s/^#?PermitRootLogin .+/PermitRootLogin no/" /etc/ssh/sshd_config' _late_command 'sed -ri "s/^#?PermitRootLogin .+/PermitRootLogin no/" /etc/ssh/sshd_config'
if [ -n "$authorized_keys_url" ]; then if [ -n "$authorized_keys_url" ]; then
_late_command "sudo -u $username mkdir -pm 700 /home/$username/.ssh && sudo -u $username busybox wget -qO /home/$username/.ssh/authorized_keys \"$authorized_keys_url\"" _late_command "sudo -u $username mkdir -pm 700 /home/$username/.ssh && sudo -u $username busybox wget -qO /home/$username/.ssh/authorized_keys \"$authorized_keys_url\""
fi fi
$save_preseed << EOF $save_preseed << EOF
d-i passwd/root-login boolean false d-i passwd/root-login boolean false
d-i passwd/make-user boolean true d-i passwd/make-user boolean true
d-i passwd/user-fullname string d-i passwd/user-fullname string
d-i passwd/username string $username d-i passwd/username string $username
EOF EOF
if [ "$cleartext_password" = true ]; then if [ "$cleartext_password" = true ]; then
$save_preseed << EOF $save_preseed << EOF
d-i passwd/user-password password $password d-i passwd/user-password password $password
@ -382,9 +373,6 @@ EOF
fi fi
fi fi
timezone=${timezone:-UTC}
ntp=${ntp:-0.debian.pool.ntp.org}
$save_preseed << EOF $save_preseed << EOF
# Clock and time zone setup # Clock and time zone setup
@ -401,6 +389,7 @@ if [ "$skip_partitioning" != true ]; then
# Partitioning # Partitioning
EOF EOF
if [ -n "$disk" ]; then if [ -n "$disk" ]; then
echo "d-i partman-auto/disk string $disk" | $save_preseed echo "d-i partman-auto/disk string $disk" | $save_preseed
fi fi
@ -408,31 +397,33 @@ EOF
echo "d-i partman-auto/method string $partitioning_method" | $save_preseed echo "d-i partman-auto/method string $partitioning_method" | $save_preseed
if [ "$partitioning_method" = regular ]; then if [ "$partitioning_method" = regular ]; then
if [ "$gpt" = true ]; then [ "$gpt" = true ] && $save_preseed << 'EOF'
$save_preseed << 'EOF'
d-i partman-partitioning/default_label string gpt d-i partman-partitioning/default_label string gpt
EOF EOF
fi
echo "d-i partman/default_filesystem string $filesystem" | $save_preseed echo "d-i partman/default_filesystem string $filesystem" | $save_preseed
if [ "$efi" = true ]; then
$save_preseed << 'EOF' $save_preseed << 'EOF'
d-i partman-auto/expert_recipe string \ 538 538 1075 free \
naive :: \
1 1 1 free \
$iflabel{ gpt } \ $iflabel{ gpt } \
$reusemethod{ } \ $reusemethod{ } \
method{ biosgrub } \ method{ efi } \
format{ } \
. \ . \
EOF EOF
if [ "$efi" = true ]; then else
$save_preseed << 'EOF' $save_preseed << 'EOF'
538 538 1075 free \ d-i partman-auto/expert_recipe string \
naive :: \
1 1 1 free \
$iflabel{ gpt } \ $iflabel{ gpt } \
$reusemethod{ } \ $reusemethod{ } \
method{ efi } \ method{ biosgrub } \
format{ } \
. \ . \
EOF EOF
fi fi
$save_preseed << 'EOF' $save_preseed << 'EOF'
2149 2150 -1 $default_filesystem \ 2149 2150 -1 $default_filesystem \
method{ format } \ method{ format } \
@ -444,34 +435,25 @@ EOF
EOF EOF
echo "d-i partman-auto/choose_recipe select naive" | $save_preseed echo "d-i partman-auto/choose_recipe select naive" | $save_preseed
fi fi
$save_preseed << 'EOF' $save_preseed << 'EOF'
d-i partman-basicfilesystems/no_swap boolean false d-i partman-basicfilesystems/no_swap boolean false
d-i partman/choose_partition select finish d-i partman/choose_partition select finish
d-i partman/confirm boolean true d-i partman/confirm boolean true
EOF EOF
fi fi
$save_preseed << EOF $save_preseed << 'EOF'
# Base system installation # Base system installation
EOF EOF
if [ "$install_recommends" = false ]; then [ "$install_recommends" = false ] && echo "d-i base-installer/install-recommends boolean $install_recommends" | $save_preseed
echo "d-i base-installer/install-recommends boolean $install_recommends" | $save_preseed [ -n "$kernel" ] && echo "d-i base-installer/kernel/image string $kernel" | $save_preseed
fi
if [ -n "$kernel" ]; then [ "$security_repository" = true ] && security_repository=$mirror_protocol://$mirror_host${mirror_directory%/*}/debian-security
echo "d-i base-installer/kernel/image string $kernel" | $save_preseed
fi
if [ -z "$security_repository" ]; then
security_repository=http://security.debian.org/debian-security
else
if [ "$security_repository" = true ]; then
security_repository=$mirror_protocol://$mirror_host${mirror_directory%/*}/debian-security
fi
fi
$save_preseed << EOF $save_preseed << EOF
@ -482,99 +464,72 @@ d-i apt-setup/local0/repository string $security_repository $suite/updates main
d-i apt-setup/local0/source boolean true d-i apt-setup/local0/source boolean true
EOF EOF
upgrade=${upgrade:-full-upgrade} $save_preseed << 'EOF'
$save_preseed << EOF
# Package selection # Package selection
tasksel tasksel/first multiselect ssh-server tasksel tasksel/first multiselect ssh-server
EOF EOF
if [ -n "$install" ]; then [ -n "$install" ] && echo "d-i pkgsel/include string $install" | $save_preseed
echo "d-i pkgsel/include string $install" | $save_preseed [ -n "$upgrade" ] && echo "d-i pkgsel/upgrade select $upgrade" | $save_preseed
fi
$save_preseed << EOF $save_preseed << 'EOF'
d-i pkgsel/upgrade select $upgrade
popularity-contest popularity-contest/participate boolean false popularity-contest popularity-contest/participate boolean false
# Boot loader installation # Boot loader installation
d-i grub-installer/only_debian boolean true
d-i grub-installer/bootdev string default d-i grub-installer/bootdev string default
EOF EOF
if [ -n "$kernel_params" ]; then [ -n "$kernel_params" ] && echo "d-i debian-installer/add-kernel-opts string$kernel_params" | $save_preseed
echo "d-i debian-installer/add-kernel-opts string$kernel_params" | $save_preseed
fi
$save_preseed << EOF $save_preseed << 'EOF'
# Finishing up the installation # Finishing up the installation
d-i finish-install/reboot_in_progress note d-i finish-install/reboot_in_progress note
EOF EOF
if [ "$bbr" = true ]; then [ "$bbr" = true ] && _late_command '{ echo "net.core.default_qdisc=fq"; echo "net.ipv4.tcp_congestion_control=bbr"; } > /etc/sysctl.d/bbr.conf'
_late_command '{ echo "net.core.default_qdisc=fq"; echo "net.ipv4.tcp_congestion_control=bbr"; } > /etc/sysctl.d/bbr.conf'
fi
if [ -n "$late_command" ]; then [ -n "$late_command" ] && echo "d-i preseed/late_command string in-target sh -c '$late_command'" | $save_preseed
echo "d-i preseed/late_command string in-target sh -c '$late_command'" | $save_preseed
fi
if [ "$power_off" = true ]; then [ "$power_off" = true ] && echo 'd-i debian-installer/exit/poweroff boolean true' | $save_preseed
echo 'd-i debian-installer/exit/poweroff boolean true' | $save_preseed
fi
save_grub_cfg="cat" save_grub_cfg='cat'
if [ "$dry_run" != true ]; then if [ "$dry_run" != true ]; then
if [ -z "$architecture" ]; then [ -z "$architecture" ] && architecture=amd64 && _command_exists dpkg && architecture="$(dpkg --print-architecture)"
if command_exists dpkg; then
architecture="$(dpkg --print-architecture)"
else
architecture=amd64
fi
fi
base_url="$mirror_protocol://$mirror_host$mirror_directory/dists/$suite/main/installer-$architecture/current/images/netboot/debian-installer/$architecture" base_url="$mirror_protocol://$mirror_host$mirror_directory/dists/$suite/main/installer-$architecture/current/images/netboot/debian-installer/$architecture"
if command_exists wget; then if _command_exists wget; then
wget "$base_url/linux" "$base_url/initrd.gz" wget "$base_url/linux" "$base_url/initrd.gz"
elif command_exists curl; then elif _command_exists curl; then
curl -O "$base_url/linux" -O "$base_url/initrd.gz" curl -O "$base_url/linux" -O "$base_url/initrd.gz"
elif command_exists busybox; then elif _command_exists busybox; then
busybox wget "$base_url/linux" "$base_url/initrd.gz" busybox wget "$base_url/linux" "$base_url/initrd.gz"
else else
_err 'wget/curl/busybox is required to download files' _err 'wget/curl/busybox is required to download files'
exit 1
fi fi
gunzip initrd.gz gunzip initrd.gz
echo preseed.cfg | cpio -H newc -o -A -F initrd echo preseed.cfg | cpio -H newc -o -A -F initrd
gzip initrd gzip initrd
if command_exists update-grub; then if _command_exists update-grub; then
grub_cfg=/boot/grub/grub.cfg grub_cfg=/boot/grub/grub.cfg
update-grub update-grub
elif command_exists grub2-mkconfig; then elif _command_exists grub2-mkconfig; then
grub_cfg=/boot/grub2/grub.cfg grub_cfg=/boot/grub2/grub.cfg
grub2-mkconfig -o "$grub_cfg" grub2-mkconfig -o "$grub_cfg"
else else
_err 'update-grub/grub2-mkconfig command not found' _err 'update-grub/grub2-mkconfig command not found'
exit 1
fi fi
save_grub_cfg="tee -a $grub_cfg" save_grub_cfg="tee -a $grub_cfg"
fi fi
if [ "$boot_partition" = true ]; then
boot_directory=/
else
boot_directory=/boot/
fi
installer_directory="$boot_directory$installer" installer_directory="$boot_directory$installer"
$save_grub_cfg << EOF $save_grub_cfg << EOF

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