when vagrant up `create': Call to virD omainCreateWithFlags failed: Network not found: no network with matching name 'vagrant-libvirt' (Libvirt::Error) fix it 1cat<<EOF> /var/tmp/vagrant-libvirt.xml 2<!-- 3WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE 4OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: 5 virsh net-edit default 6or other application using the libvirt API. 7--> 8 9<network> 10 <name>vagrant-libvirt</name> 11 <uuid>17f365b0-4da6-4f19-91b6-c4dde30d6ac0</uuid> 12 <forward mode='nat'/> 13 <bridge name='virbr1' stp='on' delay='0'/> 14 <mac address='52:54:00:0f:4f:10'/> 15 <domain name='kvm' localOnly='yes'/> 16 <ip address='192.168.122.1' netmask='255.255.255.0'> 17 <dhcp> 18 <range start='192.168.122.2' end='192.168.122.254'/> 19 </dhcp> 20 </ip> 21</network> 22EOF 23virsh net-define /var/tmp/vagrant-libvirt.xml 24virsh net-start vagrant-libvirt 25virsh net-autostart vagrant-libvirt 26virsh net-list 27brctl show create libvirt network

… in UNATTENDED mode PRE-INSTALL download Archlinux ISO 1aria2c 'https://archlinux.org/releng/releases/2021.01.01/torrent/' 2sha1sum archlinux-2021.01.01-x86_64.iso 3gpg --receive-keys 0x4AA4767BBC9C4B1D18AE28B77F2D434B9741E8AC 4gpg --verify archlinux-2021.01.01-x86_64.iso.sig INSTALL FROM LIVECD ! CAUTION ! IT WILL DELETE ALL DATA FROM YOUR FIRST HDD DEVICE ( SATA or SSD ) 1MY_DEVICE="$(awk '/ sd| vd| nvme/{print $4}' /proc/partitions | head -1)" 2 3timedatectl set-ntp true 4 5parted /dev/${MY_DEVICE} -s mklabel gpt mkpart ESP fat32 1M 128M set 1 boot on mkpart primary ext4 128M 100% 6 7mkfs.vfat -n ESP /dev/${MY_DEVICE}1 8mkfs.btrfs -f -L ROOT /dev/${MY_DEVICE}2 9 10mount -t btrfs /dev/${MY_DEVICE}2 /mnt/ 11btrfs subvolume create /mnt/@root 12btrfs subvolume create /mnt/@var 13btrfs subvolume create /mnt/@home 14btrfs subvolume create /mnt/@snapshots 15 16umount /mnt 17mount -o subvol=@root /dev/${MY_DEVICE}2 /mnt 18mkdir /mnt/{var,home,.snapshots} 19mount -o subvol=@var /dev/${MY_DEVICE}2 /mnt/var 20mount -o subvol=@home /dev/${MY_DEVICE}2 /mnt/home/ 21mount -o subvol=@snapshots /dev/${MY_DEVICE}2 /mnt/.snapshots 22 23mkdir /mnt/boot 24mount /dev/${MY_DEVICE}1 /mnt/boot 25 26pacstrap /mnt base linux linux-firmware base-devel make binutils btrfs-progs zsh vim git sudo efibootmgr wpa_supplicant dialog iw bash-completion 27 28genfstab -L /mnt >> /mnt/etc/fstab INSTALL FROM CHROOT 1HOST_NAME='archlinux' 2MY_PUBKEY='<my_ssh_pubkey>' 3MY_USER='<my_user>' 4MY_USER_PASS='<my_password>' 5ROOT_PASS='<root_password>' 6arch-chroot /mnt /bin/bash <<EOF 7ln -sv /usr/share/zoneinfo/Europe/Paris /etc/localtime 8hwclock --systohc 9sed -i '/^#fr_FR.UTF-8\|^#en_US.UTF-8/{s/^#//}' /etc/locale.gen 10locale-gen 11echo 'LANG=en_US.UTF-8' > /etc/locale.conf 12echo 'KEYMAP=us' > /etc/vconsole.conf 13echo 'FONT=latarcyrheb-sun32' >> /etc/vconsole.conf 14echo ${HOST_NAME} > /etc/hostname 15cat <<HOSTS>> /etc/hosts 16127.0.0.1 localhost 17::1 localhost 18127.0.1.1 ${HOST_NAME}.localdomain ${HOST_NAME} 19HOSTS 20 21echo 'root:${ROOT_PASS}' | chpasswd 22useradd -m -g users -G wheel -s /bin/bash ${MY_USER} 23echo '${MY_USER}:${MY_USER_PASS}' | chpasswd 24sed -i.BKP '/HOOKS=/{s/=.*/=(base systemd autodetect modconf block keyboard sd-vconsole sd-encrypt filesystems)/}' /etc/mkinitcpio.conf 25grep HOOKS /etc/mkinitcpio.conf 26mkinitcpio -p linux 27bootctl --path=/boot install 28 29pacman-key --init 30pacman-key --populate archlinux 31 32pacman -Syu --noconfirm 33pacman -S base-devel gnu-netcat intel-ucode ncdu openssh --noconfirm 34 35timedatectl set-ntp true 36 37systemctl enable sshd systemd-networkd systemd-resolved systemd-timesyncd 38 39git clone https://aur.archlinux.org/yay.git /usr/src/yay 40chmod -R ${MY_USER}: /usr/src/yay 41su - ${MY_USER} -c 'cd /usr/src/yay/ && makepkg -si' 42 43cat <<BOOT_ARCH> /boot/loader/entries/arch.conf 44title Arch Linux 45linux /vmlinuz-linux 46initrd /intel-ucode.img 47initrd /initramfs-linux.img 48options rw root=/dev/${MY_DEVICE}2 rootflags=subvol=@root 49BOOT_ARCH 50 51cat <<BOOT_LOAD> /boot/loader/loader.conf 52default arch 53BOOT_LOAD 54 55networkctl list 56 57cat <<NETWORKD_LAN> /etc/systemd/network/lan.network 58[Match] 59Name=e* 60[Network] 61DHCP=ipv4 62NETWORKD_LAN 63 64cat <<RESOLVED> /etc/systemd/resolved.conf.d/dns_servers.conf 65[Resolve] 66DNS=9.9.9.9 67Domains=~. 68RESOLVED 69 70# USERS # 71 72cat <<USER_SUDO> /etc/sudoers.d/${MY_USER} 73${MY_USER} ALL=(ALL) NOPASSWD: ALL 74USER_SUDO 75 76mkdir /root/.ssh /home/${MY_USER}/.ssh 77 78cat <<ROOT_AUTH> /root/.ssh/authorized_keys 79${MY_PUBKEY} 80ROOT_AUTH 81 82cat <<USER_AUTH> /home/${MY_USER}/.ssh/authorized_keys 83${MY_PUBKEY} 84USER_AUTH 85 86chmod -Rc 0700 /root/.ssh /home/${MY_USER}/.ssh 87chown -Rc ${MY_USER}: /home/${MY_USER}/.ssh/ 88 89# VIRTUALIZATION # 90 91pacman -S dmidecode dnsmasq docker-compose ebtables libvirt qemu vagrant --noconfirm 92 93systemctl enable docker libvirtd 94 95usermod -aG docker,libvirt,kvm ${MY_USER} 96 97su - ${MY_USER} -c 'vagrant plugin install vagrant-libvirt' 98 99exit 100EOF 101reboot SOURCES Official ArchLinux Installation Main references for this article: Archlinux install on XPS 13 9360 ArchLinux step-by-step installation on btrfs See more… Minimal instructions for installing ArchLinux Archlinux install from Artizirk Efficient Encrypted UEFI-Booting Arch Installation

… for old Raritan PDU/KVM devices Web access Build your Docker image from Dockerfile create your Dockerfile Dockerfile 1FROM i386/debian:jessie 2RUN apt-get update && apt-get install -y firefox-esr icedtea-plugin icedtea-netx openjdk-7-jre openjdk-7-jre-headless tzdata-java 3RUN useradd -ms /bin/bash firefox 4ENV MOZ_FORCE_DISABLE_E10S=1 5USER firefox 6WORKDIR /home/firefox 7CMD tail -f /dev/null tail -f /dev/null force your Docker container to be persistent even if you’ve closed your Firefox session build it 1docker build -t firefox . # make it great again 2docker images --filter reference=firefox # check your docker image information Run your Docker container pop Firefox 1docker run -it --rm -e DISPLAY=${DISPLAY} -v /tmp/.X11-unix:/tmp/.X11-unix -v $HOME/Downloads:/home/firefox/Downloads firefox firefox # run it with sharing Downloads directory add it to your .bashrc to simplify Firefox docker access .bashrc 1function ffjava7(){ 2 CONTAINER_NAME=firefox 3 xhost +; 4 docker container inspect ${CONTAINER_NAME} > /dev/null 2>&1 ; [ $? -eq 0 ] \ 5 && docker start firefox \ 6 || docker run -d --name ${CONTAINER_NAME} -e DISPLAY=${DISPLAY} -v /tmp/.X11-unix:/tmp/.X11-unix -v $HOME/Downloads:/home/firefox/Downloads firefox firefox 7} Sources how to build your Docker container https://blog.yadutaf.fr/2017/09/10/running-a-graphical-app-in-a-docker-container-on-a-remote-server/ https://www.sicpers.info/2020/10/running-linux-gui-apps-under-macos-using-docker/ [Mac OSX] https://github.com/jlesage/docker-firefox https://github.com/findepi/docker.firefox-silverlight-pipelight [Silverlight support] fix Firefox tab persistently crashes on some sites https://support.mozilla.org/bm/questions/1266719

… with desktop notifications from Taskwarrior Script it send only tasks with high priority list as desktop notification task_notify_send.sh 1#!/usr/bin/env bash 2 3export DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/$EUID/bus" 4notify-send -u critical "$(for ID in $(task _ids priority:V -WAITING -PARENT); do echo [$ID]$(task $ID export | jq -r '.[].description') ; done)" Schedule it schedule task notification as systray message every 20 minutes in Crontab 1# crontab -l 2/20 * * * * ~/.local/bin/task_notify_send.sh Sources https://www.sudipbhandari.wtf/task-warrior-reminder/ https://eshapard.github.io/export-taskwarrior-dates-to-remind.html

… by restoring GRUB for crypted disks After system update and reboot, GRUB failed with this error symbol 'grub_calloc' not found. fix it with these commands 1fsck /dev/nvme0n1p* 2efibootmgr -c --disk /dev/nvme0n1 3efibootmgr -v /dev/nvme0n1 check in your BIOS if EFI boot is always configured (link to /boot/efi/EFI/arch/grubx64.efi) in bonus, if you want to mount your crypted system 1cryptsetup open /dev/nvme0n1p3 data 2pvs 3vgs 4vgchange -ay 5lsblk -fs 6mount /dev/mapper/arch-root /mnt/ 7mount /dev/mapper/arch-home /mnt/home/ 8mount /dev/nvme0n1p2 /mnt/boot/ 9mount /dev/nvme0n1p1 /mnt/boot/efi/ # for UEFI systems 10arch-chroot /mnt GRUB by Archlinux Wiki

…with Espanso text expander in Rust (works in Bash, Firefox,…) Getting Started 1yay -S espanso-bin # install espanso package for archlinux 2espanso status # get espanso service status 3espanso start # start espanso service / create ~/.config/systemd/user/espanso.service if does not exist 4espanso path # list espanso config files 5:date # get current date from trigger :date config files Support fix X11 display context error with starting Espanso service 1[[ -z $(grep DISPLAY $HOME/.config/systemd/user/espanso.service) ]] && \ 2 sed -i '/\[Service\]/aEnvironment="DISPLAY=:0"' $HOME/.config/systemd/user/espanso.service && \ 3 /usr/bin/systemctl --user daemon-reload && \ 4 espanso start # fix x11 display context error Sources Getting Started Official Packages Offical Documentation Pour gagner du temps quand vous tapez au clavier [in French] Use Espanso Text Expander To Save Time And Increase Productivity The Journey to My First 100 GitHub Stars

With Markdown Viewer Addon by Simeon Velichkov. Install https://addons.mozilla.org/en-US/firefox/addon/markdown-viewer-chrome/ https://github.com/simov/markdown-viewer View local markdown pages press button from toolbar press advanced options Allowed Origins > select *://* (you may need to use special configuration)[https://github.com/KeithLRobertson/markdown-viewer#support-for-local-files-on-linux] (from issue #131) View file with rst extension press button from toolbar press advanced options MATCH : \.(?:markdown|mdown|mkdn|md|mkd|mdwn|mdtxt|mdtext|text|rst)(?:#.*|\?.*)?$ Table of Contents press button from toolbar press CONTENT tab activate TOC Reload automatically page press button from toolbar press CONTENT tab activate AUTORELOAD

with git command prerequisites 1git remote add upstream git@github.com:mmistakes/minimal-mistakes.git # in your github repository 2git fetch --all update files from mmistakes v.4.19.1 according to Github network alerts 1git checkout 4.19.1 -- minimal-mistakes-jekyll.gemspec package.json package-lock.json 2git commit -m "[update] from minimal mistakes 4.19.1 release"

in oneliner and mass renaming mode get tags information with exiftool and copy tags /rename mp3 file with id3v2 1IFS=$'\n';for MP3_NAME in *mp3; do 2 ARTIST=$(exiftool -artist "$MP3_NAME" | awk -F': ' '{print $2}'); 3 SONG=$(exiftool -title "$MP3_NAME" | awk -F': ' '{print $2}'); 4 ALBUM=$(exiftool -album "$MP3_NAME" | awk -F': ' '{print $2}'); 5 id3v2 -a "$ARTIST" -t "$SONG" -A "$ALBUM" --genre 45 "$MP3_NAME" ; 6 mv -vi "$MP3_NAME" "${ARTIST} - ${SONG}.mp3" ; 7done; 8IFS=$' \t\n' tags based on mp3 filename if some mp3 files are no tags with exiftool 1# move mp3 files without tags in 3mpty directory 2IFS=$'\n';for SONG in *mp3; do 3 [ -z "$(exiftool -artist "$SONG")" ] && \ 4 mv -vi "$SONG" 3mpty/ ; 5done 6cd 3mpty 7 8# set tags on mp3 files from filename with this format "artist - title.mp3" 9IFS=$'\n'; for SONG_FILENAME in *mp3; do 10 ARTIST=$(echo "$SONG_FILENAME" | sed 's/ - .*$//'); 11 TITLE=$(echo "$SONG_FILENAME" | sed 's/^.*- \(.*\)\..*$/\1/'); 12 id3v2 -a "$ARTIST" -t "$TITLE" "$SONG_FILENAME"; 13done; 14IFS=$' \t\n' id3v2 commands that may help 1id3v2 -h 2id3v2 --list-frames # list id3v2 frames 3id3v2 --list-genres # list id3v1 genres 4id3v2 --delete-all # remove all tags from mp3 file

with hotkeys add custom hotkeys to increase / decrease subtitle size 1cat <EOF>> ~/.config/mpv/input.conf 2# increase subtitle font size 3ALT+k add sub-scale +0.1 4 5# decrease subtitle font size 6ALT+j add sub-scale -0.1 HOTKEYS v => show/hide subtitle ALT+k => increase subtitle size ALT+j => decrease subtitle size