tau2taurus: 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/tau2taurus - from package: python-taurus

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

Error in other languages:
tau2taurus: bevel nie gevind nie
tau2taurus: comandă negăsită
tau2taurus: comando não encontrado
tau2taurus: commande introuvable
tau2taurus: command not found
tau2taurus: käsku ei ole
tau2taurus: không tìm thấy lệnh
tau2taurus: komanda nerasta
tau2taurus: Kommando nicht gefunden.
tau2taurus: kommandot finns inte
tau2taurus: komut yok
tau2taurus: nie znaleziono polecenia
tau2taurus: níor aimsíodh an t-ordú
tau2taurus: no se encontró la orden
tau2taurus: no s'ha trobat l'ordre
tau2taurus: opdracht niet gevonden
tau2taurus: parancs nem található
tau2taurus: perintah tidak ditemukan
tau2taurus: príkaz nenájdený
tau2taurus: příkaz nenalezen
tau2taurus: команда не найдена
tau2taurus: командата не е открита
tau2taurus: 命令找不到
tau2taurus: コマンドが見つかりません