NPlam: 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/NPlam - from package: netpipe-lam

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

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