Gscan2pdf 2.5.7, GTK tool to produce PDF / DjVu from scanned document, was released today. Here’s how to install it in Ubuntu 16.04, Ubuntu 18.04, Ubuntu 19.04.

Changes in Gscan2pdf 2.5.7 include:

  • Recognise “Document Table” as flatbed for imagescan backend.
  • Use option name as label for those options with no title.
  • Extended edit profile functionality in scan dialog to frontend options.
  • Close device when switching frontends so as not to block SANE for the new frontend.
  • Allow tool processes to immediately continue working on subsequent pages despite errors on previous ones.
  • Fix infinite loop scanning reverse pages
  • Updated translations.

How to Install gscan2pdf 2.5.7 in Ubuntu:

The official Ubuntu PPA has made the new release packages for all current Ubuntu releases, and their derivatives.

1. Open terminal either by pressing Ctrl+Alt+T on keyboard or by searching for ‘terminal’ from application menu. When it opens, run command to add the PPA:

sudo add-apt-repository ppa:jeffreyratcliffe/ppa

Type user password (no asterisk feedback due to security reason) when it prompts and hit Enter.

2. For those who have a previous release installed, upgrade it through Software Updater:

upgrade gscan2pdf

For the first time, you can either install it via Synaptic Package Manager or by running following commands in terminal:

sudo apt-get update

sudo apt-get install gscan2pdf

How to Remove:

To remove gscan2pdf, either use your system package manager or run command:

sudo apt-get remove --autoremove gscan2pdf

And the PPA can be removed via Software & Updates utility, under Other Software tab.

gnome shell

This quick tutorial shows how to move Application Menu button from bottom to the top on the left panel (dock launcher) in Ubuntu 19.10 Gnome Desktop.

Ubuntu Dock (the left panel) now is more customizable in Ubuntu 19.10. It finally offers option to move the position of the ‘Show Applications’ button.

1.) Open Ubuntu Software, search for and install dconf editor:

2.) Launch dconf editor from application menu, when it opens, navigate to org -> gnome -> shell -> extensions -> dash-to-dock.

There scroll down, find out and turn on the toggle of ‘show-apps-at-top‘.

For those familiar with Linux commands, open terminal (Ctrl+Alt+T) and run single command to move it to the top:

gsettings set show-apps-at-top true

If you want to move the ‘Application Menu’ button back to bottom, run command:

gsettings set show-apps-at-top false

gnome shell

Now it’s easy to move the Trash Can icon from the desktop to the left panel (dock app launcher) in Ubuntu 19.10 with Gnome 3.34.

The default left panel with favorite application launcher icons in Ubuntu 19.10 is handled by Gnome shell extension ‘Ubuntu dock‘ (modified version of Dash-to-dock). Now it finally offers option to show or hide the Trash Can icon.

1.) First open Ubuntu Software, search for and install Dconf editor.

2.) Launch dconf editor, and navigate to org -> gnome -> shell -> extensions -> dash-to-dock.

Then scroll down, find out the key says show-trash and turn it on.

3.) You may also hide the Trash icon from the Desktop.

Navigate to org -> gnome -> shell -> extensions -> desktop-icons, and turn off the toggle for show-trash.

For those familiar with Linux commands, you can do the job by running single command in terminal:

1. To add trash can to the panel:

gsettings set show-trash true

You can replace true with false in the command to remove the icon.

2. To remove trash icon from the desktop:

gsettings set show-trash false

gnome shell

This is another tutorial shows how to send the application launcher icons to the Desktop in Ubuntu 19.10.

Where Ubuntu stores the application icons:

Ubuntu stores the application shortcut icons as .desktop files. Most of them are available in /usr/share/applications directory, and few in .local/share/applications.

Since Ubuntu 19.04, you can no longer drop and drop or even copy and paste files directly from file manager to the Desktop, because Nautilus file manager is replaced by a Gnome Shell extension to handle the Desktop.

However, the .desktop files can be directly placed into user’s “Desktop” folder. Like Windows, all files in that folder will be displayed on the Desktop.

1.) Open “Files” (Nautilus file manager) and navigate to the Desktop folder.

2.) Right-click on “Files” in left panel and open a new file manager window.

3.) In new file manager window, navigate to Other Locations -> Computer -> usr -> share -> applications.

There choose the app launcher files as you want, drag and drop them to the Desktop folder that you opened in step 1.).

4.) Finally right-click on each file in the desktop, and select ‘Allow Launching’.

gnome shell

This quick tutorial shows how to restore the type-to-seek (type-ahead) functionality in Ubuntu 18.04 Nautilus file browser.

The type ahead functionality is removed in upstream Nautilus and unavailable in Ubuntu since Ubuntu 17.10 Artful.

For those sticking to the search functionality, Lubomir Brindza has made a patched for Nautilus in Ubuntu 18.04 and higher.

To install the patched Nautilus package, open terminal either via Ctrl+Alt+T keyboard shortcut or by searching for ‘terminal’ from application menu.

When terminal opens, run following commands one by one:

1.) Paste command and hit run to add the PPA. Type user password (no asterisk feedback) for sudo prompts and hit Enter to continue.

sudo add-apt-repository ppa:lubomir-brindza/nautilus-typeahead

2.) Then check updates and upgrade Nautilus package with the patch:

sudo apt update

sudo apt upgrade

The PPA also contains the patch for Ubuntu 19.04 and Ubuntu 19.10, it is however a little older than default Nautilus version so far, and you may either wait the PPA to be updated or download & install the packages manually (see the previous link).


To uninstall the patch and restore Nautilus file browser to its original status, simply purge the PPA via command:

sudo apt install ppa-purge && sudo ppa-purge ppa:lubomir-brindza/nautilus-typeahead