denemo_file_update: 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/denemo_file_update - from package: denemo-data

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

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