tau_throttle: 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/tau_throttle - from package: tau

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

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