nforenum: 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/nforenum - from package: grfcodec

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

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