pynslcd: 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/sbin/pynslcd - from package: pynslcd

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

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