Xterm, and likely many other X11 programs, do not set themselves window icons, which window managers typically use to represent that program window in switcher lists, taskbars, and so on. This program can set the X11 window icon for any given window, to that of a given image file.
Snap-specific information
Due to the snap's confined nature the application can only access icons in the user's home directory. To access icons under /media and /mnt directories you have to manually connect the snap to the removable-media interface by running the following command in a terminal:
(Ownership verified)
The publisher has verified that they own this domain.
It does not guarantee the Snap is an official upload
from the upstream project.
Enable snaps on elementary OS and install xseticon (UNOFFICIAL)
Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Enable snapd
Snap can be installed on elementary OS from the command line. Open Terminal from the Applications launcher and type the following:
sudo apt update
sudo apt install snapd
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
Install xseticon (UNOFFICIAL)
To install xseticon (UNOFFICIAL), simply use the following command: