Ubuntu Desktop Guide

https://help.ubuntu.com/lts/ubuntu-help/
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### Install Startup Disk Creator via command line

Source: https://help.ubuntu.com/lts/ubuntu-help/addremove-creator.html.en

Use this command to install the Startup Disk Creator application on Ubuntu-based systems if it is not already present.

```bash
sudo apt install usb-creator-gtk
```

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

### Install KDE ISO Image Writer

Source: https://help.ubuntu.com/lts/ubuntu-help/addremove-creator.html.en

Command to install the KDE ISO Image Writer utility on Ubuntu-based systems.

```bash
sudo apt install isoimagewriter 
```

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

### APT repository line format

Source: https://help.ubuntu.com/lts/ubuntu-help/addremove-sources.html.en

Example of the APT line format required when adding a new software repository.

```text
deb http://archive.ubuntu.com/ubuntu/ resolute main
```

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

### Display Disk Utility Output

Source: https://help.ubuntu.com/lts/ubuntu-help/addremove-creator.html.en

Example output showing disk identification for a USB drive.

```text
  /dev/disk0 (internal, physical):
   […]
  /dev/disk2
   #: TYPE NAME SIZE IDENTIFY
   0: FDisk_partition_scheme *4.0 GB disk2
   1: DOS_FAT_32 USB CLE 4.0 GB disk2s1
```

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### Configure libdvdcss2 for DVD decryption

Source: https://help.ubuntu.com/lts/ubuntu-help/video-dvd-restricted.html.en

Run this command in the terminal after installing the required packages to finalize the installation of libdvdcss2.

```bash
sudo dpkg-reconfigure libdvd-pkg
```

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

### Enable numeric keypad at startup

Source: https://help.ubuntu.com/lts/ubuntu-help/numeric-keypad.html.en

Use the numlockx command within Startup Applications to ensure the numeric keypad is active upon login.

```bash
numlockx on
```

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

### dd Completion Output

Source: https://help.ubuntu.com/lts/ubuntu-help/addremove-creator.html.en

Example output displayed by the dd command upon successful completion.

```text
6337593344 bytes (6.3 GB, 5.9 GiB) copied, 143 s, 44.3 MB/s6345887744 bytes (6.3 GB, 5.9 GiB) copied, 143.302 s, 44.3 MB/s

1512+1 records in
1512+1 records out
6345887744 bytes (6.3 GB, 5.9 GiB) copied, 286.923 s, 22.1 MB/s

```

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

### Set color profile recalibration thresholds via GSettings

Source: https://help.ubuntu.com/lts/ubuntu-help/color-notifications.html.en

Configures the maximum age in days for printer and display profiles before a warning is triggered. Requires the GNOME settings daemon color plugin.

```bash
$ gsettings set org.gnome.settings-daemon.plugins.color recalibrate-printer-threshold 180
$ gsettings set org.gnome.settings-daemon.plugins.color recalibrate-display-threshold 90
```
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