sauce9-convert: 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/sauce9-convert - from package: sauce

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

Error in other languages:
sauce9-convert: bevel nie gevind nie
sauce9-convert: comandă negăsită
sauce9-convert: comando não encontrado
sauce9-convert: commande introuvable
sauce9-convert: command not found
sauce9-convert: käsku ei ole
sauce9-convert: không tìm thấy lệnh
sauce9-convert: komanda nerasta
sauce9-convert: Kommando nicht gefunden.
sauce9-convert: kommandot finns inte
sauce9-convert: komut yok
sauce9-convert: nie znaleziono polecenia
sauce9-convert: níor aimsíodh an t-ordú
sauce9-convert: no se encontró la orden
sauce9-convert: no s'ha trobat l'ordre
sauce9-convert: opdracht niet gevonden
sauce9-convert: parancs nem található
sauce9-convert: perintah tidak ditemukan
sauce9-convert: príkaz nenájdený
sauce9-convert: příkaz nenalezen
sauce9-convert: команда не найдена
sauce9-convert: командата не е открита
sauce9-convert: 命令找不到
sauce9-convert: コマンドが見つかりません