itox: command not found

Have You tried accessing the binary with the full path?

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/itox - from package: xinetd

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