owx: 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/owx - from package: owx

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

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