ostinato: 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/ostinato - from package: ostinato

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

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