roarvio: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/roarvio - from package: roarclients

You may install the required package with command apt-get install {package}
Error in other languages:
roarvio: bevel nie gevind nie
roarvio: comandă negăsită
roarvio: comando não encontrado
roarvio: commande introuvable
roarvio: command not found
roarvio: käsku ei ole
roarvio: không tìm thấy lệnh
roarvio: komanda nerasta
roarvio: Kommando nicht gefunden.
roarvio: kommandot finns inte
roarvio: komut yok
roarvio: nie znaleziono polecenia
roarvio: níor aimsíodh an t-ordú
roarvio: no se encontró la orden
roarvio: no s'ha trobat l'ordre
roarvio: opdracht niet gevonden
roarvio: parancs nem található
roarvio: perintah tidak ditemukan
roarvio: príkaz nenájdený
roarvio: příkaz nenalezen
roarvio: команда не найдена
roarvio: командата не е открита
roarvio: 命令找不到
roarvio: コマンドが見つかりません