osgwidgetnotebook: 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/osgwidgetnotebook - from package: openscenegraph

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

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