scope: 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/scope - from package: csound-utils

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

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