victor: 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/victor - from package: spark

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

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