E: Unable to locate package issue

cuckoo933

I'm trying to install the 'stressapptest' pkg.
but the error occurred like as below.
----------------------------------------------------------
firefly@firefly:~$ sudo apt-get install stressapptest
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package stressapptest
----------------------------------------------------------

So, I tried something as below cmd but the result was same.

firefly@firefly:~/proj$ sudo apt update
firefly@firefly:~/proj$ sudo add-apt-repository universe
firefly@firefly:~/proj$ sudo add-apt-repository multiverse

How can I solve this problem ?

cuckoo933

You mean that 'stressapptest' is already installed on the firefly Ubuntu ?

cuckoo933

OK Thanks a lot.
I have checked it works well.