osgimpostor: 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/osgimpostor - from package: openscenegraph

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

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