wagon: 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/wagon - from package: speech-tools

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

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