monboob: 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/monboob - from package: weboob

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

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