The icon of p7zip does not appear in the applications, but if I type p7 in the search window, it says : execute "p7zip". I press it, and nothing happens.
I had installed it with sudo apt install p7zip-full p7zip-rar
and
p7zip 16.02+dfsg-7build1
p7zip-full 16.02+dfsg-7build1
p7zip-rar 16.02-3build1
are included in the list of the system's software packages
