rtps: command not found

Have You tried accessing the binary with the full path?

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/rtps - from package: xenomai-runtime

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