towitoko-tester: 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/towitoko-tester - from package: libtowitoko-dev

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

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