How to install and run UNetbootin?

Strangely, but true, you cannot install from the the original site, or run it. So how to install and run UNetBootin?

Install UNetbootin in Ubuntu

Using these few commands, downloading and running it will work.

sudo add-apt-repository ppa:gezakovacs/ppa
sudo apt-get update
sudo apt-get install unetbootin

Adding repository is necessary for updates and support for older versions of Ubuntu.

Installing UNetbootin via PPA

sudo add-apt-repository ppa:gezakovacs/ppa
sudo apt-get update
sudo apt-get install unetbootin

Note:
In Ubuntu <18.04, we can directly install UNetbootin with single command

sudo apt-get install unetbootin

But UNetbootin is unavailable from the standard Ubuntu >= 18.04 repositories, due to requiring now-deprecated dependencies (e.g., gksu, kdesudo). The standard UNetbootin PPA, which explicitly supports Ubuntu >= 18.04, should be leveraged instead.

As commented in your question by Web-E , you should just add the executable permission to the file downloaded from SourceForge, then you are able to run it (no installation needed, btw). I had the same problem and that comment gave me the solution, without the need to add the ppa.

If you don't want to use terminal, you can right-click the file unetbootin-linux-585, select "properties", go to "permissions" and then tick "allow execution of the file as a program" (or something like that, i don't have an english-language o.s.).

EDIT:

As suggested in the comment below, here's a little how-to about making a file executable:

To make the file executable via terminal (and we are here supposing you downloaded that file using a browser like Firefox or Opera), you only have to go to the folder where the file resides, right-click on the folder and select "Open terminal here". When you have the terminal shell, don't forget to run

ls -l

to make sure the file is really here, and to check permissions. You should see something like

-rw-r--r-- 1 name name 4478124 lug 11 15:28 unetbootin-linux-585

which means you have to add execution permissions on it. How you do it? Simply typing:

chmod +x unetbootin-linux-585

(don't forget to use Tab to autocomplete the long unetbootin name :P). Now, checking again the file with ls -l should give the following result:

-rwxr-xr-x 1 name name 4478124 lug 11 15:28 unetbootin-linux-585

This means that the program became executable, so just type:

./unetbootin-linux-585

to run the application.

Hope everything is clear.