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author date title tags uuid
Alvie Rahman \today Linux
linux
8ef11516-4afd-4f80-abb8-bdce045e8b65

user stuff

add user to group

usermod -a -G group user

change primary user group

usermod -g group user

help i think my device shut down after deleting the current kernel and before installing the second (no entries in systemd-boot/grub/)

  1. boot into a live usb of current disto

  2. mount the root partition to /mnt and the boot partition to the appropriate folder (check fstab which should be in /mnt/etc/fstab, if it says /efi, mount it to /mnt/efi)

  3. chroot into the mounted filesystem:

    on arch based systems you can simply run:

    arch-chroot /mnt

    on non arch based systems1:

    mount -t proc /proc /mnt/proc/
mount -t sysfs /sys /mnt/ys/
mount --rbind /dev /mnt/dev/
# only if using uefi
mount --rbind /sys/firmware/efi/efivars /mnt/sys/firmware/efi/efivars/
# for internet access
cp /etc/resolv.conf /mnt/etc/resolv.conf
chroot /mnt /bin/bash

  4. the system can now be force updated/kernel images can be generated

    on arch based systems2:

    # reinstall all current packages
pacman -Qqen > /root/pkgs.txt # list all installed packages
pacman -S $(< /root/pkgs.txt) # reinstall all installed packages
rm /root/pkgs.txt # clean up

# reinstall dependencies (if there are issues)
pacman -Qqdn > /root/deps.txt # list all installed dependencies
pacman -S $(< /root/deps.txt) # reinstall all installed dependencies
rm /root/deps.txt # clean up