### Install Omabuntu with wget command

Source: https://omabuntu.omakasui.org/manual/setup/installation

Run this command in a terminal to download and start the Omabuntu installation. You will be prompted for your username and email to configure Git, and later to confirm extensions. A reboot is required at the end.

```bash
wget -qO- https://omabuntu.omakasui.org/install | bash
```

--------------------------------

### Retry installation

Source: https://omabuntu.omakasui.org/manual/setup/troubleshooting

If the initial installation fails, you can manually trigger the installation script.

```bash
source ~/.local/share/omakub/install.sh
```

--------------------------------

### Install Firefox browser with omakub

Source: https://omabuntu.omakasui.org/manual/applications/browsers

Installs Firefox from the Mozilla PPA, pinned to prevent replacement by Ubuntu's Snap package. Use this command to install a browser from the terminal.

```bash
omakub install browser firefox
```

--------------------------------

### Install Ruby and Node.js with Mise per-project

Source: https://omabuntu.omakasui.org/manual/applications/development-tools

Use these commands in a project directory to install specific runtime versions. They create or update a .mise.toml or .tool-versions file for the project.

```bash
mise use ruby@3.4
mise use node@22
```

--------------------------------

### Install a Web App with omakub-webapp-install

Source: https://omabuntu.omakasui.org/manual/applications/web-apps

Run this command from the terminal or via the Omabuntu Menu (Install > Web App) to add a new web app. It prompts for the name, URL, and icon; icons are fetched from the site's favicon when possible, otherwise you are prompted for a URL (dashboardicons.com is suggested). The app opens in Chromium or your configured default browser if it is Chrome, Brave, Edge, Opera, or Vivaldi.

```bash
omakub-webapp-install
```

--------------------------------

### Install Flatpak app

Source: https://omabuntu.omakasui.org/manual/configuration/packages

Use this command to install a Flatpak application from Flathub. Replace <app-id> with the application's ID, e.g., com.example.App.

```bash
flatpak install flathub <app-id>
```

--------------------------------

### Install a hook with omakub hook install

Source: https://omabuntu.omakasui.org/manual/configuration/hooks

Installs a script as a hook for a specific event. The script must be executable and will run in alphabetical order with other hooks in the same .d directory.

```bash
omakub hook install theme-set ~/my-theme-script
```

--------------------------------

### Install Ruby globally with Mise

Source: https://omabuntu.omakasui.org/manual/applications/development-tools

Use the -g flag to install a runtime version globally, affecting all projects.

```bash
mise use -g ruby@3.4
```

--------------------------------

### Install omakub-zellij with apt

Source: https://omabuntu.omakasui.org/manual/setup/faq

Install the Zellij package, which is no longer preinstalled in Omabuntu. Tmux is the default terminal multiplexer used by the configuration.

```bash
sudo apt install omakub-zellij
```

--------------------------------

### Example: add and drop a Notes keybinding

Source: https://omabuntu.omakasui.org/manual/configuration/extra-hotkeys

Adds a keybinding named 'Notes' that runs 'obsidian' with the key combination <Super><Control>o, then removes it by name. Adding a shortcut that reuses an existing key combination replaces the old one.

```bash
omakub gnome keybinding add "Notes" "obsidian" "<Super><Control>o"
omakub gnome keybinding drop "Notes"
```

--------------------------------

### Review migration logs

Source: https://omabuntu.omakasui.org/manual/setup/troubleshooting

Displays the contents of the installation log file to help identify issues encountered during migration.

```bash
cat /var/log/omabuntu-install.log
```

--------------------------------

### Install a custom AI agent with omakub npm

Source: https://omabuntu.omakasui.org/manual/applications/ai

Installs a package as a command. The command name defaults to the package name; pass a second argument when the binary is named differently, as with scoped packages.

```bash
omakub npm install <package> [command-name]
```

--------------------------------

### Example theme-set hook script (sync-wezterm)

Source: https://omabuntu.omakasui.org/manual/configuration/hooks

A bash script that receives the theme name as $1 and writes it to a Wezterm configuration file. This is a sample hook that can be activated by removing the .sample extension.

```bash
#!/bin/bash

# $1 is the theme name
echo "theme = \"$1\"" > ~/.config/wezterm/theme.lua
```

--------------------------------

### Install Chromium Google account service

Source: https://omabuntu.omakasui.org/manual/applications/browsers

Installs the Chromium account service to enable Google account sign-in, which fails out of the box due to missing OAuth credentials. Restart Chromium afterwards.

```bash
omakub install chromium google account
```

--------------------------------

### Verify sudo privileges

Source: https://omabuntu.omakasui.org/manual/setup/troubleshooting

Ensures the current user has the necessary sudo permissions required for installation.

```bash
sudo -v
```

--------------------------------

### Install and remove font families

Source: https://omabuntu.omakasui.org/manual/configuration/fonts

Commands to install or remove specific font families provided by Omabuntu.

```bash
omakub install font jetbrains-mono
omakub remove font jetbrains-mono
```

--------------------------------

### Restore from backup

Source: https://omabuntu.omakasui.org/manual/setup/troubleshooting

Manually restore configuration files by removing the current directory and copying files from a specific timestamped backup folder.

```bash
rm ~/.local/share/omakub
cp ~/.local/share/omakub-backup-{timestamp} ~/.local/share/omakub
```

--------------------------------

### Run migration script

Source: https://omabuntu.omakasui.org/manual/setup/migration

Execute this command in your terminal to initiate the migration from Omakub to Omabuntu. A reboot is required after the process finishes.

```bash
wget -qO- https://omabuntu.omakasui.org/migrate | bash
```

--------------------------------

### Configure Plymouth and GDM themes via CLI

Source: https://omabuntu.omakasui.org/manual/essentials/themes

Use the omakub command to set the boot splash (Plymouth) and login screen (GDM) themes, or reset them to the Omabuntu default. Note that Plymouth customization is skipped on systems with LVM disk encryption.

```bash
omakub plymouth set-by-theme "Tokyo Night"   # boot splash
omakub gdm set-by-theme "Tokyo Night"        # login screen
omakub plymouth reset                        # back to the Omabuntu default
omakub gdm reset
```

--------------------------------

### Set default browser and print current default

Source: https://omabuntu.omakasui.org/manual/applications/browsers

Sets Firefox as the default browser and prints the current default. The first command sets the XDG handler and http, https, and text/html associations. The second command prints the current default.

```bash
omakub default browser firefox
```

```bash
omakub default browser              # print the current default
```

--------------------------------

### Omabuntu GNOME keybinding add and drop commands

Source: https://omabuntu.omakasui.org/manual/configuration/extra-hotkeys

Use these commands to add or remove a custom GNOME keybinding. The add command takes a name, command, and keybinding; the drop command takes a name. Running add with no arguments prompts for the three values interactively.

```bash
omakub gnome keybinding add <name> <command> <keybinding>
omakub gnome keybinding drop <name>
```

--------------------------------

### Preview, set, and reset Plymouth boot splash

Source: https://omabuntu.omakasui.org/manual/configuration/branding

Preview, apply, and reset the boot splash. The preview command writes an image instead of applying. Setting the boot splash also syncs the login screen to the same colors and logo. Plymouth changes rebuild the initramfs and need sudo; on systems with LVM disk encryption the customization is skipped.

```bash
omakub plymouth preview '#1d2021' '#ebdbb2' logo.png preview.png
omakub plymouth set '#1d2021' '#ebdbb2' logo.png
omakub plymouth reset
```

--------------------------------

### Set background directly with omakub theme bg set

Source: https://omabuntu.omakasui.org/manual/configuration/backgrounds

Use these commands to set the background image directly. The first sets the image with default scaling; the second allows specifying a scaling mode (zoom, center, stretch, fill, fit, spanned); the third cycles to the next background.

```bash
omakub theme bg set ~/Pictures/wallpaper.jpg
omakub theme bg set ~/Pictures/wallpaper.jpg center   # zoom, center, stretch, fill, fit, spanned
omakub theme bg next
```

--------------------------------

### iso2sd drive utility

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Writes an ISO image to an SD card. Running without arguments lists available SD card devices.

```bash
iso2sd ~/Downloads/ubuntu-25.04-desktop-amd64.iso /dev/sda
```

--------------------------------

### Manage About screen branding from terminal

Source: https://omabuntu.omakasui.org/manual/configuration/branding

Edit the About screen text, set it from an image, or restore the default Omabuntu logo. The About window reads from ~/.config/omakub/branding/about.txt.

```bash
omakub branding about text
omakub branding about image
omakub branding about reset
```

--------------------------------

### Set default browser, editor, and terminal

Source: https://omabuntu.omakasui.org/manual/configuration/defaults

Use these commands to define the default applications for web browsing, text editing, and terminal emulation. Running these commands without arguments will display the currently configured value.

```bash
omakub default browser firefox
omakub default editor code
omakub default terminal ghostty
```

--------------------------------

### Configure DNS settings

Source: https://omabuntu.omakasui.org/manual/configuration/defaults

Set the system DNS resolution provider. You can choose interactively or specify a provider like Cloudflare directly.

```bash
omakub setup dns              # choose interactively
omakub setup dns Cloudflare
```

--------------------------------

### tdl dev layout

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Opens Neovim, an AI tool, and a terminal in a single Tmux window.

```bash
tdl claude        # editor on left, claude on right (30%), terminal at bottom (15%)
tdl claude codex  # same, with a second AI tool below the first
```

--------------------------------

### Share Files with omakub share

Source: https://omabuntu.omakasui.org/manual/applications/desktop-tools

Commands to send clipboard content, files, or folders to other devices via LocalSend. Transfers run as detached processes.

```bash
omakub share clipboard                    # send the current clipboard as a text file
omakub share file ~/Downloads/report.pdf
omakub share file                         # pick files with fzf, Tab for multiple
omakub share folder
```

--------------------------------

### Run omakub debug diagnostics

Source: https://omabuntu.omakasui.org/manual/setup/troubleshooting

Collects system state information into a log file. Use the provided flags to print the output or skip sudo-dependent sections.

```bash
omakub debug              # write the log
omakub debug --print      # write it and print it
omakub debug --no-sudo    # skip the dmesg section, no sudo needed
```

--------------------------------

### tdlm multi-project dev layout

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Opens a tdl layout per subdirectory of the current folder.

```bash
tdlm claude       # one window per child dir, each with editor + claude pane
```

--------------------------------

### Video transcoding functions

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Wrappers for omakub transcode to convert video files to various formats.

```bash
transcode-video-1080p input.mov      # 1080p mp4
transcode-video-4K input.mov         # 4K mp4
transcode-video-gif input.mov        # animated gif
```

--------------------------------

### Authenticate with GitHub CLI

Source: https://omabuntu.omakasui.org/manual/applications/development-tools

Run this command to authenticate gh with your GitHub account. It initiates an interactive login flow.

```bash
gh auth login
```

--------------------------------

### Manage fonts with omakub CLI

Source: https://omabuntu.omakasui.org/manual/configuration/fonts

Commands to list, check, set, and resize the system monospace font.

```bash
omakub font list                            # every monospace font on the system
omakub font current
omakub font set "CaskaydiaMono Nerd Font"
omakub font size current
omakub font size set 10
```

--------------------------------

### tsl swarm layout

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Splits the window into N panes all running the same command.

```bash
tsl 4 claude      # four side-by-side panes each running `claude`
```

--------------------------------

### Remove a Web App with omakub-webapp-remove

Source: https://omabuntu.omakasui.org/manual/applications/web-apps

Run this command to remove an existing web app. It shows an interactive picker and deletes the selected app's .desktop file, icon, and browser profile data.

```bash
omakub-webapp-remove
```

--------------------------------

### Image transcoding functions

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Wrappers for omakub transcode to convert image files to various formats and resolutions.

```bash
img2jpg photo.png                    # JPG, high resolution
img2jpg-medium photo.tiff            # JPG, medium resolution
img2jpg-small photo.tiff             # JPG, low resolution
img2png photo.jpg                    # PNG, high resolution
```

--------------------------------

### Compression functions

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Functions for compressing directories and decompressing archives.

```bash
compress dir_name/        # creates dir_name.tar.gz
decompress archive.tar.gz # alias for tar -xzf
```

--------------------------------

### Convert Media with omakub transcode

Source: https://omabuntu.omakasui.org/manual/applications/desktop-tools

Commands to convert pictures and videos into shareable formats. The output file is saved in the same directory as the input file with the specified resolution and format.

```bash
omakub transcode                                    # pick everything interactively
omakub transcode --path ~/Downloads                 # limit the picker to one folder
omakub transcode ~/Videos/demo.mov mp4 1080p
omakub transcode ~/Pictures/photo.heic jpg medium
```

--------------------------------

### Convert image to ASCII for About screen

Source: https://omabuntu.omakasui.org/manual/configuration/branding

Convert an image to ASCII for the About screen with custom dimensions. Options include --width, --height, --mode braille|block, --threshold 0-100, and --invert. Braille packs in more detail; block reads better at small sizes.

```bash
omakub transcode ascii ~/logo.svg ~/.config/omakub/branding/about.txt --width 54 --height 26
```

--------------------------------

### Test a hook with omakub hook theme-set

Source: https://omabuntu.omakasui.org/manual/configuration/hooks

Triggers the theme-set hook manually with a given theme name, allowing you to test without switching themes.

```bash
omakub hook theme-set "Tokyo Night"
```

--------------------------------

### lip list active tunnels

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Prints all active SSH port forwarding tunnels.

```bash
lip               # print all active SSH port forwarding tunnels
```

--------------------------------

### Check UFW status

Source: https://omabuntu.omakasui.org/manual/setup/security

Displays the current status and verbose configuration of the Uncomplicated Firewall.

```bash
sudo ufw status verbose
```

--------------------------------

### Manage Reminders with omakub reminder

Source: https://omabuntu.omakasui.org/manual/applications/desktop-tools

Commands to schedule, list, or clear desktop notification reminders. Reminders persist after closing the terminal but are cleared upon system reboot.

```bash
omakub reminder 5                      # notify in 5 minutes
omakub reminder 30 "Check the oven"    # with a message
omakub reminder show                   # list what's pending, with times
omakub reminder clear                  # cancel everything
```

--------------------------------

### Run AI agents side by side with Tmux layouts

Source: https://omabuntu.omakasui.org/manual/applications/ai

Use tdl and tsl functions to run agents in Tmux panes. tdl claude gives editor left, claude right, terminal bottom; tdl claude codex adds a second agent below; tsl 4 claude creates four panes all running claude.

```bash
tdl claude          # editor left, claude right, terminal bottom
tdl claude codex    # same, with a second agent below the first
tsl 4 claude        # four panes, all running claude
```

--------------------------------

### ga add worktree

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Creates a new Git worktree and branch in a directory adjacent to the current project.

```bash
ga feature-login    # creates ../myproject--feature-login/ on a new branch
```

--------------------------------

### Set and reset GDM login screen

Source: https://omabuntu.omakasui.org/manual/configuration/branding

Set the GDM login screen background (hex color or image path) with a logo, or reset to default. The background accepts a hex color or an image path.

```bash
omakub gdm set '#1e1e2e' logo.png
omakub gdm set ~/Pictures/wallpaper.png logo.png
omakub gdm reset
```

--------------------------------

### fip SSH port forwarding

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Forwards local ports to a remote server.

```bash
fip myserver 3000         # forward localhost:3000 to myserver:3000
fip myserver 3000 5432    # forward multiple ports in one command
```

--------------------------------

### Remap compose key to right Alt with gsettings

Source: https://omabuntu.omakasui.org/manual/setup/faq

Use this command to move the compose key from Caps Lock to the right Alt key, restoring Caps Lock functionality. Any xkb compose option can replace 'compose:ralt'.

```bash
gsettings set org.gnome.desktop.input-sources xkb-options "['compose:ralt']"
```

--------------------------------

### gd delete worktree

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Removes the current worktree and deletes its associated branch after confirmation.

```bash
gd    # prompts for confirmation, then removes the worktree and deletes the branch
```

--------------------------------

### dip SSH port forwarding removal

Source: https://omabuntu.omakasui.org/manual/applications/shell-functions

Stops active port forwarding for specified ports.

```bash
dip 3000          # stop forwarding port 3000
dip 3000 5432     # stop multiple at once
```

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