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

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

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