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README.md

Ubuntu

Start

Remove Snap

Package List

snap list

bare
core20
core22
firefox
gnome-3-38-2004
gnome-42-2204
gtk-common-themes
snap-store
snapd
snapd-desktop-integration

Remove Packages

snap remove --purge firefox
snap remove --purge snap-store
snap remove --purge gtk-common-themes
snap remove --purge gnome-3-38-2004
snap remove --purge gnome-42-2004
snap remove --purge snapd-desktop-integration
# snap remove --purge core22
snap remove --purge core20
snap remove --purge bare
sudo rm -rf /var/cache/snapd

Unmount /snap

df -ah

/dev/loop3       74M   74M     0  100% /snap/core22/858
/dev/loop14      41M   41M     0  100% /snap/snapd/19993
umount /snap/core22/858
umount /snap/core22/858

Unmount ZFS /var/snap

zfs list

rpool/ROOT/ubuntu_3bss94/var/snap    488K  /var/snap
sudo zfs unmount /var/snap

Remove snapd

sudo apt autoremove --purge snapd

Remove Directories

sudo rm -rf /snap
sudo rm -rf /var/snap
sudo rm -rf /var/lib/snapd

Remove the last snap directory

cd $HOME
rm -rf ./snap

Stop snapd

sudo systemctl list-units | grep snapd

# nothing
# sudo systemctl disable snapd.service
# sudo systemctl disable snapd.socket
# sudo systemctl disable snapd.seeded.service

sudo systemctl mask snapd.service

Mark APT

apt mark
sudo apt-mark hold snapd
apt-mark showhold

snapd
dpkg hold
echo "snapd hold" | sudo dpkg --set-selections
dpkg --get-selections | grep snap
aptitude hold
sudo aptitude hold snapd
sudo aptitude upgrade

Block Snap

sudo vi /etc/apt/preferences.d/nosnap

Package: snapd
Pin: release a=*
Pin-Priority: -10
sudo vi /etc/apt/preferences.d/nosnap-firefox

Package: firefox*
Pin: release o=Ubuntu*
Pin-Priority: -1
sudo apt update

Install gnome-software

sudo apt install --install-suggests gnome-software

gnome tweaks

  1. Search: tweaks
  2. Download GNOME Tweaks
Caps Lock to Ctrl
  1. Tweaks
  2. Keyboard & Mouse
  3. Additional Layout Options
  4. Ctrl position
  5. Caps Lock as Ctrl
Hangul
ibus-setup
  1. Input Method
  2. Add: Hangul in Korean

Settings:

  1. Keyboard
  2. Input Sources
  3. Add Hangul
  4. Preferences - IBusHangul Setup
  5. Hangul Toggle Key

Install Firefox

sudo add-apt-repository ppa:mozillateam/ppa

Auto PPA Update:

sudo vi /etc/apt/apt.conf.d/51unattended-upgrades-firefox

Unattended-Upgrade::Allowed-Origins {
    "LP-PPA-mozillateam:${distro_codename}";
};
sudo vi /etc/apt/preferences.d/ppa-firefox

Package: firefox*
Pin: release o=LP-PPA-mozillateam*
Pin-Priority: 501
sudo apt update
sudo apt install -t 'o=LP-PPA-mozillateam' firefox

Install Packages

sudo apt install build-essential
sudo apt install curl

zsh

sudo apt install zsh
chsh -s $(which zsh)
autoload -Uz zsh-newuser-install
zsh-newuser-install -f

Terminal

xclip for nvim

sudo apt install xclip

.deb

Get a .deb package

apt download [package]

Extract a .deb package

mkdir package_deb
dpkg-deb -R pakcage.deb package_deb/

.deb:

DEBIAN/
usr/

Extract a control file

mkdir package_deb
dpkg-deb -e package.deb/

DEBIAN:

control
md5sums