tsudpsend: 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/tsudpsend - from package: opencaster

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

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