464 lines
18 KiB
Bash
Executable File
464 lines
18 KiB
Bash
Executable File
#!/usr/bin/env -S bash -e
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# Cleaning the TTY.
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clear
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# Selecting the kernel flavor to install.
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kernel_selector () {
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echo "List of kernels:"
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echo "1) Stable — Vanilla Linux kernel and modules, with a few patches applied."
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echo "2) Hardened — A security-focused Linux kernel."
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echo "3) Longterm — Long-term support (LTS) Linux kernel and modules."
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echo "4) Zen Kernel — Optimized for desktop usage."
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read -r -p "Insert the number of the corresponding kernel: " choice
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echo "$choice will be installed"
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case $choice in
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1 ) kernel=linux
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;;
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2 ) kernel=linux-hardened
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;;
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3 ) kernel=linux-lts
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;;
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4 ) kernel=linux-zen
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;;
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* ) echo "You did not enter a valid selection."
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kernel_selector
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esac
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}
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## user input ##
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# Selecting the target for the installation.
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PS3="Select the disk where Arch Linux is going to be installed: "
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select ENTRY in $(lsblk -dpnoNAME|grep -P "/dev/sd|nvme|vd");
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do
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DISK=$ENTRY
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echo "Installing Arch Linux on $DISK."
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break
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done
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# Confirming the disk selection.
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read -r -p "This will delete the current partition table on $DISK. Do you agree [y/N]? " response
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response=${response,,}
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if [[ ! ("$response" =~ ^(yes|y)$) ]]; then
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echo "Quitting."
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exit
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fi
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#select kernel
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kernel_selector
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# Setting username.
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read -r -p "Please enter name for a user account (leave empty to skip): " username
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# Setting password.
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if [[ -n $username ]]; then
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read -r -p "Please enter a password for the user account: " password
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fi
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# Choose locales.
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read -r -p "Please insert the locale you use in this format (xx_XX): " locale
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# Choose keyboard layout.
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read -r -p "Please insert the keyboard layout you use: " kblayout
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## installation ##
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# Updating the live environment usually causes more problems than its worth, and quite often can't be done without remounting cowspace with more capacity, especially at the end of any given month.
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pacman -Sy
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# Installing curl
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pacman -S --noconfirm curl
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# formatting the disk
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wipefs -af "$DISK" &>/dev/null
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sgdisk -Zo "$DISK" &>/dev/null
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# Checking the microcode to install.
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CPU=$(grep vendor_id /proc/cpuinfo)
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if [[ $CPU == *"AuthenticAMD"* ]]; then
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microcode=amd-ucode
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else
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microcode=intel-ucode
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fi
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# Creating a new partition scheme.
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echo "Creating new partition scheme on $DISK."
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parted -s "$DISK" \
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mklabel gpt \
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mkpart ESP fat32 1MiB 128MiB \
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set 1 esp on \
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mkpart cryptroot 128MiB 100% \
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sleep 0.1
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ESP="/dev/$(lsblk $DISK -o NAME,PARTLABEL | grep ESP| cut -d " " -f1 | cut -c7-)"
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cryptroot="/dev/$(lsblk $DISK -o NAME,PARTLABEL | grep cryptroot | cut -d " " -f1 | cut -c7-)"
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# Informing the Kernel of the changes.
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echo "Informing the Kernel about the disk changes."
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partprobe "$DISK"
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# Formatting the ESP as FAT32.
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echo "Formatting the EFI Partition as FAT32."
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mkfs.fat -F 32 -s 2 $ESP &>/dev/null
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# Creating a LUKS Container for the root partition.
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echo "Creating LUKS Container for the root partition."
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cryptsetup luksFormat --type luks1 $cryptroot
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echo "Opening the newly created LUKS Container."
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cryptsetup open $cryptroot cryptroot
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BTRFS="/dev/mapper/cryptroot"
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# Formatting the LUKS Container as BTRFS.
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echo "Formatting the LUKS container as BTRFS."
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mkfs.btrfs $BTRFS &>/dev/null
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mount -o clear_cache,nospace_cache $BTRFS /mnt
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# Creating BTRFS subvolumes.
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echo "Creating BTRFS subvolumes."
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btrfs su cr /mnt/@ &>/dev/null
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btrfs su cr /mnt/@/.snapshots &>/dev/null
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mkdir -p /mnt/@/.snapshots/1 &>/dev/null
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btrfs su cr /mnt/@/.snapshots/1/snapshot &>/dev/null
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btrfs su cr /mnt/@/boot/ &>/dev/null
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btrfs su cr /mnt/@/home &>/dev/null
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btrfs su cr /mnt/@/root &>/dev/null
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btrfs su cr /mnt/@/srv &>/dev/null
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btrfs su cr /mnt/@/var_log &>/dev/null
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btrfs su cr /mnt/@/var_log_journal &>/dev/null
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btrfs su cr /mnt/@/var_crash &>/dev/null
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btrfs su cr /mnt/@/var_cache &>/dev/null
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btrfs su cr /mnt/@/var_tmp &>/dev/null
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btrfs su cr /mnt/@/var_spool &>/dev/null
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btrfs su cr /mnt/@/var_lib_libvirt_images &>/dev/null
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btrfs su cr /mnt/@/var_lib_machines &>/dev/null
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btrfs su cr /mnt/@/var_lib_gdm &>/dev/null
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btrfs su cr /mnt/@/var_lib_AccountsService &>/dev/null
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btrfs su cr /mnt/@/cryptkey &>/dev/null
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chattr +C /mnt/@/boot
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chattr +C /mnt/@/srv
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chattr +C /mnt/@/var_log
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chattr +C /mnt/@/var_log_journal
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chattr +C /mnt/@/var_crash
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chattr +C /mnt/@/var_cache
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chattr +C /mnt/@/var_tmp
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chattr +C /mnt/@/var_spool
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chattr +C /mnt/@/var_lib_libvirt_images
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chattr +C /mnt/@/var_lib_machines
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chattr +C /mnt/@/var_lib_gdm
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chattr +C /mnt/@/var_lib_AccountsService
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chattr +C /mnt/@/cryptkey
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#Set the default BTRFS Subvol to Snapshot 1 before pacstrapping
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btrfs subvolume set-default "$(btrfs subvolume list /mnt | grep "@/.snapshots/1/snapshot" | grep -oP '(?<=ID )[0-9]+')" /mnt
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cat << EOF >> /mnt/@/.snapshots/1/info.xml
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<?xml version="1.0"?>
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<snapshot>
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<type>single</type>
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<num>1</num>
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<date>1999-03-31 0:00:00</date>
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<description>First Root Filesystem</description>
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<cleanup>number</cleanup>
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</snapshot>
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EOF
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chmod 600 /mnt/@/.snapshots/1/info.xml
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# Mounting the newly created subvolumes.
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umount /mnt
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echo "Mounting the newly created subvolumes."
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mount -o ssd,noatime,space_cache,compress=zstd:15 $BTRFS /mnt
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mkdir -p /mnt/{boot,root,home,.snapshots,srv,tmp,/var/log,/var/crash,/var/cache,/var/tmp,/var/spool,/var/lib/libvirt/images,/var/lib/machines,/var/lib/gdm,/var/lib/AccountsService,/cryptkey}
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodev,nosuid,noexec,subvol=@/boot $BTRFS /mnt/boot
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodev,nosuid,subvol=@/root $BTRFS /mnt/root
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodev,nosuid,subvol=@/home $BTRFS /mnt/home
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,subvol=@/.snapshots $BTRFS /mnt/.snapshots
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mount -o ssd,noatime,space_cache=v2.autodefrag,compress=zstd:15,discard=async,subvol=@/srv $BTRFS /mnt/srv
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/var_log $BTRFS /mnt/var/log
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# Toolbox (https://github.com/containers/toolbox) needs /var/log/journal to have dev, suid, and exec, Thus I am splitting the subvolume. Need to make the directory after /mnt/var/log/ has been mounted.
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mkdir -p /mnt/var/log/journal
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,subvol=@/var_log_journal $BTRFS /mnt/var/log/journal
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/var_crash $BTRFS /mnt/var/crash
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/var_cache $BTRFS /mnt/var/cache
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# Pamac needs /var/tmp to have exec. Thus I am not adding that flag.
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# I am considering including pacmac-flatpak-gnome AUR package by default, since I am its maintainer.
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,subvol=@/var_tmp $BTRFS /mnt/var/tmp
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/var_spool $BTRFS /mnt/var/spool
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/var_lib_libvirt_images $BTRFS /mnt/var/lib/libvirt/images
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/var_lib_machines $BTRFS /mnt/var/lib/machines
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# GNOME requires /var/lib/gdm and /var/lib/AccountsService to be writeable when booting into a readonly snapshot. Thus we sadly have to split them.
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/var_lib_gdm $BTRFS /mnt/var/lib/gdm
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/var_lib_AccountsService $BTRFS /mnt/var/lib/AccountsService
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# The encryption is splitted as we do not want to include it in the backup with snap-pac.
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mount -o ssd,noatime,space_cache=v2,autodefrag,compress=zstd:15,discard=async,nodatacow,nodev,nosuid,noexec,subvol=@/cryptkey $BTRFS /mnt/cryptkey
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mkdir -p /mnt/boot/efi
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mount -o nodev,nosuid,noexec $ESP /mnt/boot/efi
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# Pacstrap (setting up a base sytem onto the new root).
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echo "Installing the base system (it may take a while)."
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pacstrap /mnt base ${kernel} ${microcode} linux-firmware grub grub-btrfs snapper snap-pac efibootmgr sudo networkmanager apparmor python-psutil python-notify2 nano gdm gnome-control-center gnome-terminal gnome-tweaks nautilus pipewire-pulse pipewire-alsa pipewire-jack flatpak firewalld zram-generator adobe-source-han-sans-otc-fonts adobe-source-han-serif-otc-fonts gnu-free-fonts reflector mlocate man-db chrony sbctl
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# Routing jack2 through PipeWire.
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echo "/usr/lib/pipewire-0.3/jack" > /mnt/etc/ld.so.conf.d/pipewire-jack.conf
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# Generating /etc/fstab.
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echo "Generating a new fstab."
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genfstab -U /mnt >> /mnt/etc/fstab
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sed -i 's#,subvolid=258,subvol=/@/.snapshots/1/snapshot,subvol=@/.snapshots/1/snapshot##g' /mnt/etc/fstab
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# Setting hostname.
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read -r -p "Please enter the hostname: " hostname
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echo "$hostname" > /mnt/etc/hostname
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# Setting hosts file.
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echo "Setting hosts file."
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cat > /mnt/etc/hosts <<EOF
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127.0.0.1 localhost
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::1 localhost
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127.0.1.1 $hostname.localdomain $hostname
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EOF
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# Setting up locales.
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echo "$locale.UTF-8 UTF-8" > /mnt/etc/locale.gen
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echo "LANG=$locale.UTF-8" > /mnt/etc/locale.conf
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# Setting up keyboard layout.
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read -r -p "Please insert the keyboard layout you use: " kblayout
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echo "KEYMAP=$kblayout" > /mnt/etc/vconsole.conf
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# Configuring /etc/mkinitcpio.conf
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echo "Configuring /etc/mkinitcpio for ZSTD compression and LUKS hook."
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sed -i 's,#COMPRESSION="zstd",COMPRESSION="zstd",g' /mnt/etc/mkinitcpio.conf
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sed -i 's,modconf block filesystems keyboard,keyboard modconf block encrypt filesystems,g' /mnt/etc/mkinitcpio.conf
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# Enabling LUKS in GRUB and setting the UUID of the LUKS container.
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UUID=$(blkid $cryptroot | cut -f2 -d'"')
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sed -i 's/#\(GRUB_ENABLE_CRYPTODISK=y\)/\1/' /mnt/etc/default/grub
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echo "" >> /mnt/etc/default/grub
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echo -e "# Booting with BTRFS subvolume\nGRUB_BTRFS_OVERRIDE_BOOT_PARTITION_DETECTION=true" -o /mnt/etc/default/grub
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sed -i 's#rootflags=subvol=${rootsubvol}##g' /mnt/etc/grub.d/10_linux
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sed -i 's#rootflags=subvol=${rootsubvol}##g' /mnt/etc/grub.d/20_linux_xen
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# Enabling CPU Mitigations
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curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/default/grub.d/40_cpu_mitigations.cfg -o /mnt/etc/grub.d/40_cpu_mitigations.cfg
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# Distrusting the CPU
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curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/default/grub.d/40_distrust_cpu.cfg -o /mnt/etc/grub.d/40_distrust_cpu.cfg
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# Enabling IOMMU
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curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/default/grub.d/40_enable_iommu.cfg -o /mnt/etc/grub.d/40_enable_iommu.cfg
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# Enabling NTS
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curl https://raw.githubusercontent.com/GrapheneOS/infrastructure/main/chrony.conf -o /mnt/etc/chrony.conf
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# Setting GRUB configuration file permissions
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chmod 755 /mnt/etc/grub.d/*
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# Adding keyfile to the initramfs to avoid double password.
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dd bs=512 count=4 if=/dev/random of=/mnt/cryptkey/.root.key iflag=fullblock &>/dev/null
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chmod 000 /mnt/cryptkey/.root.key &>/dev/null
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cryptsetup -v luksAddKey /dev/disk/by-partlabel/cryptroot /mnt/cryptkey/.root.key
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sed -i "s#quiet#cryptdevice=UUID=$UUID:cryptroot root=$BTRFS lsm=landlock,lockdown,yama,apparmor,bpf cryptkey=rootfs:/cryptkey/.root.key#g" /mnt/etc/default/grub
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sed -i 's#FILES=()#FILES=(/cryptkey/.root.key)#g' /mnt/etc/mkinitcpio.conf
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# Configure AppArmor Parser caching
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sed -i 's/#write-cache/write-cache/g' /mnt/etc/apparmor/parser.conf
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sed -i 's,#Include /etc/apparmor.d/,Include /etc/apparmor.d/,g' /mnt/etc/apparmor/parser.conf
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# Blacklisting kernel modules
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curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/modprobe.d/30_security-misc.conf -o /mnt/etc/modprobe.d/30_security-misc.conf
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chmod 600 /mnt/etc/modprobe.d/*
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# Security kernel settings.
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curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/usr/lib/sysctl.d/990-security-misc.conf -o /mnt/etc/sysctl.d/990-security-misc.conf
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sed -i 's/kernel.yama.ptrace_scope=2/kernel.yama.ptrace_scope=3/g' /mnt/etc/sysctl.d/990-security-misc.conf
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curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_silent-kernel-printk.conf -o /mnt/etc/sysctl.d/30_silent-kernel-printk.conf
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curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/sysctl.d/30_security-misc_kexec-disable.conf -o /mnt/etc/sysctl.d/30_security-misc_kexec-disable.conf
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chmod 600 /mnt/etc/sysctl.d/*
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# Remove nullok from system-auth
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sed -i 's/nullok//g' /mnt/etc/pam.d/system-auth
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# Disable coredump
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echo "* hard core 0" >> /mnt/etc/security/limits.conf
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# Disable su for non-wheel users
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bash -c 'cat > /mnt/etc/pam.d/su' <<-'EOF'
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#%PAM-1.0
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auth sufficient pam_rootok.so
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# Uncomment the following line to implicitly trust users in the "wheel" group.
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#auth sufficient pam_wheel.so trust use_uid
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# Uncomment the following line to require a user to be in the "wheel" group.
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auth required pam_wheel.so use_uid
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auth required pam_unix.so
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account required pam_unix.so
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session required pam_unix.so
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EOF
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# ZRAM configuration
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bash -c 'cat > /mnt/etc/systemd/zram-generator.conf' <<-'EOF'
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[zram0]
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zram-fraction = 1
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max-zram-size = 8192
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EOF
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# Randomize Mac Address.
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bash -c 'cat > /mnt/etc/NetworkManager/conf.d/00-macrandomize.conf' <<-'EOF'
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[device]
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wifi.scan-rand-mac-address=yes
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[connection]
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wifi.cloned-mac-address=random
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ethernet.cloned-mac-address=random
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connection.stable-id=${CONNECTION}/${BOOT}
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EOF
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chmod 600 /mnt/etc/NetworkManager/conf.d/00-macrandomize.conf
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# Enable IPv6 privacy extensions
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bash -c 'cat > /mnt/etc/NetworkManager/conf.d/ip6-privacy.conf' <<-'EOF'
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[connection]
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ipv6.ip6-privacy=2
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EOF
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chmod 600 /mnt/etc/NetworkManager/conf.d/ip6-privacy.conf
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# Configuring the system.
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arch-chroot /mnt /bin/bash -e <<EOF
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# Setting up timezone.
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ln -sf /usr/share/zoneinfo/$(curl -s http://ip-api.com/line?fields=timezone) /etc/localtime &>/dev/null
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# Setting up clock.
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hwclock --systohc
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# Generating locales.my keys aren't even on
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echo "Generating locales."
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locale-gen &>/dev/null
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# Generating a new initramfs.
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echo "Creating a new initramfs."
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chmod 600 /boot/initramfs-linux* &>/dev/null
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mkinitcpio -P &>/dev/null
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# Snapper configuration
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umount /.snapshots
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rm -r /.snapshots
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snapper --no-dbus -c root create-config /
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btrfs subvolume delete /.snapshots
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mkdir /.snapshots
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mount -a
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chmod 750 /.snapshots
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# Installing GRUB.
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echo "Installing GRUB on /boot."
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grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=GRUB --modules="normal test efi_gop efi_uga search echo linux all_video gfxmenu gfxterm_background gfxterm_menu gfxterm loadenv configfile gzio part_gpt cryptodisk luks gcry_rijndael gcry_sha256 btrfs" --disable-shim-lock &>/dev/null
|
|
|
|
# Creating grub config file.
|
|
echo "Creating GRUB config file."
|
|
grub-mkconfig -o /boot/grub/grub.cfg &>/dev/null
|
|
|
|
# Adding user with sudo privilege
|
|
if [ -n "$username" ]; then
|
|
echo "Adding $username with root privilege."
|
|
useradd -m $username
|
|
usermod -aG wheel $username
|
|
|
|
groupadd -r audit
|
|
gpasswd -a $username audit
|
|
fi
|
|
EOF
|
|
|
|
# Enable AppArmor notifications
|
|
# Must create ~/.config/autostart first
|
|
mkdir -p -m 700 /mnt/home/${username}/.config/autostart/
|
|
bash -c "cat > /mnt/home/${username}/.config/autostart/apparmor-notify.desktop" <<-'EOF'
|
|
[Desktop Entry]
|
|
Type=Application
|
|
Name=AppArmor Notify
|
|
Comment=Receive on screen notifications of AppArmor denials
|
|
TryExec=aa-notify
|
|
Exec=aa-notify -p -s 1 -w 60 -f /var/log/audit/audit.log
|
|
StartupNotify=false
|
|
NoDisplay=true
|
|
EOF
|
|
chmod 700 /mnt/home/${username}/.config/autostart/apparmor-notify.desktop
|
|
arch-chroot /mnt chown -R $username:$username /home/${username}/.config
|
|
|
|
# Setting user password.
|
|
[ -n "$username" ] && echo "Setting user password for ${username}." && echo -e "${password}\n${password}" | arch-chroot /mnt passwd "$username" &>/dev/null
|
|
|
|
# Giving wheel user sudo access.
|
|
sed -i 's/# \(%wheel ALL=(ALL\(:ALL\|\)) ALL\)/\1/g' /mnt/etc/sudoers
|
|
|
|
# Change audit logging group
|
|
echo "log_group = audit" >> /mnt/etc/audit/auditd.conf
|
|
|
|
# Enabling audit service.
|
|
systemctl enable auditd --root=/mnt &>/dev/null
|
|
|
|
# Enabling auto-trimming service.
|
|
systemctl enable fstrim.timer --root=/mnt &>/dev/null
|
|
|
|
# Enabling NetworkManager.
|
|
systemctl enable NetworkManager --root=/mnt &>/dev/null
|
|
|
|
# Enabling GDM.
|
|
systemctl enable gdm --root=/mnt &>/dev/null
|
|
|
|
# Enabling AppArmor.
|
|
echo "Enabling AppArmor."
|
|
systemctl enable apparmor --root=/mnt &>/dev/null
|
|
|
|
# Enabling Firewalld.
|
|
echo "Enabling Firewalld."
|
|
systemctl enable firewalld --root=/mnt &>/dev/null
|
|
|
|
# Enabling Bluetooth Service (This is only to fix the visual glitch with gnome where it gets stuck in the menu at the top right).
|
|
# IF YOU WANT TO USE BLUETOOTH, YOU MUST REMOVE IT FROM THE LIST OF BLACKLISTED KERNEL MODULES IN /mnt/etc/modprobe.d/30_security-misc.conf
|
|
systemctl enable bluetooth --root=/mnt &>/dev/null
|
|
|
|
# Enabling Reflector timer.
|
|
echo "Enabling Reflector."
|
|
systemctl enable reflector.timer --root=/mnt &>/dev/null
|
|
|
|
# Enabling systemd-oomd.
|
|
echo "Enabling systemd-oomd."
|
|
systemctl enable systemd-oomd --root=/mnt &>/dev/null
|
|
|
|
# Disabling systemd-timesyncd
|
|
systemctl disable systemd-timesyncd --root=/mnt &>/dev/null
|
|
|
|
# Enabling chronyd
|
|
systemctl enable chronyd --root=/mnt &>/dev/null
|
|
|
|
# Enabling Snapper automatic snapshots.
|
|
echo "Enabling Snapper and automatic snapshots entries."
|
|
systemctl enable snapper-timeline.timer --root=/mnt &>/dev/null
|
|
systemctl enable snapper-cleanup.timer --root=/mnt &>/dev/null
|
|
systemctl enable grub-btrfs.path --root=/mnt &>/dev/null
|
|
|
|
# Setting umask to 077.
|
|
sed -i 's/022/077/g' /mnt/etc/profile
|
|
echo "" >> /mnt/etc/bash.bashrc
|
|
echo "umask 077" >> /mnt/etc/bash.bashrc
|
|
|
|
# Finishing up
|
|
echo "Done, you may now wish to reboot (further changes can be done by chrooting into /mnt)."
|
|
exit
|