The following repository ppa:gezakovacs/ppa
is not working
and when I try to install by download method.
kmoin@kmoin-Inspiron-15-3567:~$ chmod +x ./unetbootin-linux
chmod: cannot access './unetbootin-linux': No such file or directory
The problem you appear to be having is blindly following the directions for the binaries provided on the http://unetbootin.github.io/linux_download.html page without an understanding of the assumptions made.
Essentially the assumption is that you will be executing the command in the directory where you downloaded the file. Assuming the default directory for downloads, your first command should be cd ~/Downloads
followed by chmod +x ./unetbootin-linux
and then ./unetbootin-linux
Personally after making the file executable with chmod +x ./unetbootin-linux
I would probably want to move it to a directory on my path such as /bin
or if I didn't want any other users on the system executing it possibly ~/bin
You can examine your path with the command echo $PATH
TL;DR The upshot is that you need to first know where the file is before you can make it executable. How to search entire hard drive for a file? provides the basic approach to find a file.
The simple method for 16.04:
Since 'unetbootin' is available in the Universe repository, all you need to do is enable it and then issue the command sudo apt install unetbootin
The developer offers bin
versions of Unetbootin for linux via this link,
The Ubuntu Startup Disk Creator comes with Ubuntu and there is a robust version in 16.04 LTS and newer versions of Ubuntu.
Disks alias gnome-disks
is another robust tool that comes with Ubuntu.
mkusb works in all current versions of Ubuntu and clones to create a live-only drive for testing and installing Ubuntu. It can also create a persistent live drive, where you can install programs and save data (and they survive shutdown and reboot).
./unetbootin-linux
andunetbootin-linux
are equivalent. Your recommendation is thus moot.