lumper: 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/lumper - from package: fondu

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

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