GRUB

Commands What it does
sed -i 's/^GRUB_CMDLINE_LINUX_DEFAULT="/&option /' /etc/default/grub adds kernel option to GRUB file

Replace &option with the kernel param like quiet or similar.

You will need to run this command when making changes to GRUB's file before rebooting
sudo update-grub

Editing the /etc/default/grub file and changing the GRUB_DEFAULT line to match this will boot the previous kernel as the default:

GRUB_DEFAULT="1>3"

Run the update-grub command to save that change.

fwupd

| Commands | What it does | |:——–:|:————:| | fwupdmgr get-devices | List devices supported by fwupd | | fwupdmgr get-updates | Perform updates to devices supported by fwupd | https://wiki.archlinux.org/title/fwupd

Ubuntu/Pop

apt/dpkg

| Commands | What it does | |:——————————————————:|:————————————————–:| | apt policy packagename | Package information | | apt-cache madison packagename | List available versions for a package | | sudo apt install packagename –dry-run | See what packages will be installed with the package| | apt policy packagename | Find version installed and available | | sudo dpkg –remove –force-remove-reinstreq package_name | Remove broken package | | sudo apt-mark hold packagename | Hold a package to the current version | | dpkg –list | grep linux-image | | apt list –installed | grep packagename |

kernel commands

Commands What it does
sudo update-initramfs -c -k kernelversion Generate a new initramfs image with version

flatpak

Commands What it does
flatpak update Update flatpak packages
flatpak list Show the installed flatpak packages
flatpak search Search flatpak packages from sources
flatpak remotes List Flatpak remotes (other servers)

Plasma

Commands What it does
kioclient exec path/to/desktop/file Runs the .desktop file

GNOME

GSettings

Commands What it does
gsettings set org.gnome.desktop.interface scaling-factor 2 Change scaling for the UI
gsettings set com.ubuntu.user-interface.desktop cursor-size 48 Enlarge cursor
gsettings set org.gnome.desktop.background picture-uri 'file://PathToImage' Change wallpaper
gsettings set org.gnome.desktop.wm.preferences button-layout "appmenu:minimize,maximize,close" Enable Minimize and Maximize buttons