scour: 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/scour - from package: python-scour

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

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