roarpluginapplication: command not found

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/roarpluginapplication - from package: roarclients

You may install the required package with command apt-get install {package}

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