taurusdemo: 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/taurusdemo - from package: python-taurus

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

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