mirror of
https://github.com/tommytran732/Arch-Setup-Script
synced 2024-09-19 07:04:42 -04:00
409 lines
16 KiB
Bash
409 lines
16 KiB
Bash
#!/usr/bin/env -S bash -e
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# Cleaning the TTY.
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clear
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# Updating the live environment
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pacman -Syu
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# Installing curl
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pacman -S --noconfirm curl
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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 $choice in
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1 ) kernel=linux
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;;
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2 ) kernel=linux-hardened
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;;
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3 ) kernel=linux-lts
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;;
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4 ) kernel=linux-zen
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;;
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* ) echo "You did not enter a valid selection."
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kernel_selector
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esac
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}
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# Checking the microcode to install.
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CPU=$(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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# 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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# Deleting old partition scheme.
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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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wipefs -af "$DISK" &>/dev/null
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sgdisk -Zo "$DISK" &>/dev/null
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else
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echo "Quitting."
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exit
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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 101MiB \
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set 1 esp on \
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mkpart cryptroot 101MiB 100% \
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ESP="/dev/disk/by-partlabel/ESP"
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cryptroot="/dev/disk/by-partlabel/cryptroot"
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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 $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 $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/log/journal,/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,autodefrag,compress=zstd:15,discard=async,nodev,nosuid,noexec,subvol=@/boot $BTRFS /mnt/boot
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mount -o ssd,noatime,space_cache,autodefrag,compress=zstd:15,discard=async,nodev,nosuid,subvol=@/root $BTRFS /mnt/root
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mount -o ssd,noatime,space_cache.autodefrag,compress=zstd:15,discard=async,nodev,nosuid,subvol=@/home $BTRFS /mnt/home
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mount -o ssd,noatime,space_cache,autodefrag,compress=zstd:15,discard=async,subvol=@/.snapshots $BTRFS /mnt/.snapshots
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mount -o ssd,noatime,space_cache.autodefrag,compress=zstd:15,discard=async,subvol=@/srv $BTRFS /mnt/srv
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mount -o ssd,noatime,space_cache,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.
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mount -o ssd,noatime,space_cache,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,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,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,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,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,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,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,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,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,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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kernel_selector
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# Pacstrap (setting up a base sytem onto the new root).
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# As I said above, I am considering replacing gnome-software with pamac-flatpak-gnome as PackageKit seems very buggy on Arch Linux right now.
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echo "Installing the base system (it may take a while)."
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pacstrap /mnt base ${kernel} ${microcode} linux-firmware grub grub-btrfs snapper snap-pac snap-sync efibootmgr sudo networkmanager apparmor python2-notify python-psutil nano gdm gnome-control-center gnome-terminal gnome-software gnome-software-packagekit-plugin gnome-tweaks nautilus pipewire-pulse pipewire-alsa pipewire-jack flatpak firewalld zram-generator adobe-source-han-sans-otc-fonts adobe-source-han-serif-otc-fonts gnu-free-fonts reflector mlocate man-db
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# Routing jack2 through PipeWire.
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echo "/usr/lib/pipewire-0.3/jack" > /mnt/etc/ld.so.conf.d/pipewire-jack.conf
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# Generating /etc/fstab.
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echo "Generating a new fstab."
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genfstab -U /mnt >> /mnt/etc/fstab
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sed -i 's#,subvolid=258,subvol=/@/.snapshots/1/snapshot,subvol=@/.snapshots/1/snapshot##g' /mnt/etc/fstab
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# Setting hostname.
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read -r -p "Please enter the hostname: " hostname
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echo "$hostname" > /mnt/etc/hostname
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# Setting up locales.
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read -r -p "Please insert the locale you use in this format (xx_XX): " locale
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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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# 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 $hostname
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EOF
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# Configuring /etc/mkinitcpio.conf
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echo "Configuring /etc/mkinitcpio for ZSTD compression and LUKS hook."
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sed -i 's,#COMPRESSION="zstd",COMPRESSION="zstd",g' /mnt/etc/mkinitcpio.conf
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sed -i 's,modconf block filesystems keyboard,keyboard modconf block encrypt filesystems,g' /mnt/etc/mkinitcpio.conf
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# Enabling LUKS in GRUB and setting the UUID of the LUKS container.
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UUID=$(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" >> /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/Whonix/security-misc/master/etc/default/grub.d/40_cpu_mitigations.cfg >> /mnt/etc/grub.d/40_cpu_mitigations
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# Distrusting the CPU
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curl https://raw.githubusercontent.com/Whonix/security-misc/master/etc/default/grub.d/40_distrust_cpu.cfg >> /mnt/etc/grub.d/40_distrust_cpu
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# Enabling IOMMU
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curl https://raw.githubusercontent.com/Whonix/security-misc/master/etc/default/grub.d/40_enable_iommu.cfg >> /mnt/etc/grub.d/40_enable_iommu
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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' /etc/apparmor/parser.conf
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sed -i 's,#Include /etc/apparmor.d/,Include /etc/apparmor.d/#g' /etc/apparmor/parser.conf
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# Blacklisting kernel modules
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curl https://raw.githubusercontent.com/Whonix/security-misc/master/etc/modprobe.d/30_security-misc.conf >> /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/Whonix/security-misc/master/etc/sysctl.d/30_security-misc.conf >> /mnt/etc/sysctl.d/30_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/30_security-misc.conf
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curl https://raw.githubusercontent.com/Whonix/security-misc/master/etc/sysctl.d/30_silent-kernel-printk.conf >> /mnt/etc/sysctl.d/30_silent-kernel-printk.conf
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chmod 600 /mnt/etc/sysctl.d/*
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# IO udev rules
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curl https://gitlab.com/garuda-linux/themes-and-settings/settings/garuda-common-settings/-/raw/master/etc/udev/rules.d/50-sata.rules > /mnt/etc/udev/rules.d/50-sata.rules
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curl https://gitlab.com/garuda-linux/themes-and-settings/settings/garuda-common-settings/-/raw/master/etc/udev/rules.d/60-ioschedulers.rules > /etc/udev/rules.d/60-ioschedulers.rules
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chmod 600 /mnt/etc/udev/rules.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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# 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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# Disable Connectivity Check.
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bash -c 'cat > /mnt/etc/NetworkManager/conf.d/20-connectivity.conf' <<-'EOF'
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[connectivity]
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uri=http://www.archlinux.org/check_network_status.txt
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interval=0
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EOF
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chmod 600 /mnt/etc/NetworkManager/conf.d/20-connectivity.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.
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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_gtp cryptodisk luks gcry_rijndael gcry_sha256 btrfs" --disable-shim-lock &>/dev/null
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# Creating grub config file.
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echo "Creating GRUB config file."
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grub-mkconfig -o /boot/grub/grub.cfg &>/dev/null
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#Creating wheel user
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read -r -p "Please choose an admin user to create: " USER
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echo "Creating user $USER"
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useradd -m -g wheel $USER
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passwd ${USER}
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groupadd -r audit
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gpasswd -a ${USER} audit
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EOF
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# Enanble AppArmor notifications
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bash -c 'cat > /mnt/home/${USER}/.config/autostart/apparmor-notify.desktop' <<-'EOF'
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[Desktop Entry]
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Type=Application
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Name=AppArmor Notify
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Comment=Receive on screen notifications of AppArmor denials
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TryExec=aa-notify
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Exec=aa-notify -p -s 1 -w 60 -f /var/log/audit/audit.log
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StartupNotify=false
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NoDisplay=true
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EOF
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# Giving wheel user sudo access.
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sed -i 's/# %wheel ALL=(ALL) ALL/%wheel ALL=(ALL) ALL/g' /mnt/etc/sudoers
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# Change audit logging group
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echo "log_group = audit" >> /etc/audit/auditd.conf
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# Enabling audit service.
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systemctl enable auditd --root=/mnt &>/dev/null
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# Enabling auto-trimming service.
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|
systemctl enable fstrim.timer --root=/mnt &>/dev/null
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|
|
|
# Enabling NetworkManager service.
|
|
echo "Enabling NetworkManager"
|
|
systemctl enable NetworkManager --root=/mnt &>/dev/null
|
|
|
|
# Enabling GDM.
|
|
systemctl enable gdm --root=/mnt &>/dev/null
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|
|
|
# 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
|
|
|
|
# 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
|