osggpx: 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/osggpx - from package: openscenegraph

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

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