tpb: 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/tpb - from package: tpb

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

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