raf@linux-1o57:~> viber If 'viber' is not a typo you can use command-not-found to lookup the package that contains it, like this: cnf viber raf@linux-1o57:~> cnf viber viber: команда не найдена raf@linux-1o57:~>
viber-desctop: команда не найдена raf@linux-1o57:~> cnf viber-desktop viber-desktop: команда не найдена raf@linux-1o57:~> cnf viber.desktop viber.desktop: команда не найдена raf@linux-1o57:~>