taurusui: 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/taurusui - from package: python-taurus

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

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