osgrobot: 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/osgrobot - from package: openscenegraph

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

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