td-rated: 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/sbin/td-rated - from package: blktap-utils

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

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