lnnmz: 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/lnnmz - from package: namazu2-index-tools

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

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