wix: 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/wix - from package: sat-xmpp-wix

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

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