wouxun: 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/wouxun - from package: owx

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

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