osgwidgetcanvas: 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/osgwidgetcanvas - from package: openscenegraph

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

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