wwl: 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/wwl - from package: wwl

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

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