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# 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.
> *NOTE:* you will need to run this command when making changes to GRUB's file before rebooting:
```bash
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](https://docs.flatpak.org/en/latest/using-flatpak.html)
| 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 |