Cant Install Stacks

I keep getting error while install this app - https://github.com/duncanthrax/stacks
$ deb [arch=amd64] https://dl.bintray.com/duncanthrax/deb systemd main

Command 'deb' not found, did you mean:

command 'dub' from snap dub (1.15.0)
command 'den' from snap den (1.2.0-0)
command 'derb' from deb icu-devtools
command 'debc' from deb devscripts
command 'dex' from deb dex
command 'edb' from deb edb-debugger
command 'debi' from deb devscripts
command 'dep' from deb go-dep
command 'dab' from deb bsdgames
command 'dub' from deb dub
command 'deb3' from deb quilt
command 'xdeb' from deb xdeb

You might be better off installing YACreader from here:

https://software.opensuse.org/download. ... =yacreader

I keep getting error while install this app - https://github.com/duncanthrax/stacks
$ deb [arch=amd64] https://dl.bintray.com/duncanthrax/deb systemd main

Command 'deb' not found, did you mean:

command 'dub' from snap dub (1.15.0)
command 'den' from snap den (1.2.0-0)
command 'derb' from deb icu-devtools
command 'debc' from deb devscripts
command 'dex' from deb dex
command 'edb' from deb edb-debugger
command 'debi' from deb devscripts
command 'dep' from deb go-dep
command 'dab' from deb bsdgames
command 'dub' from deb dub
command 'deb3' from deb quilt
command 'xdeb' from deb xdeb

Aside from Swarfendors suggestion, if you really want Stacks, you can edit the file in manually.
All this is doing is adding the repository, which you can do in a variety of ways.
In terminal type in

Code:

sudo gedit /etc/apt/sources.list

Paste in this line to it:

Code:

deb [arch=amd64] https://dl.bintray.com/duncanthrax/deb systemd main

save and close.
then run in terminal

Code:

sudo apt-get update

You can also do it through a GUI. From your apps menu, select Software Updater, move to "other Software" tab, then click that "add" button on the lower left.