dumprtp: 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/dumprtp - from package: dvbstream

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

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