view3dscene: 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/view3dscene - from package: view3dscene

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

Error in other languages:
view3dscene: bevel nie gevind nie
view3dscene: comandă negăsită
view3dscene: comando não encontrado
view3dscene: commande introuvable
view3dscene: command not found
view3dscene: käsku ei ole
view3dscene: không tìm thấy lệnh
view3dscene: komanda nerasta
view3dscene: Kommando nicht gefunden.
view3dscene: kommandot finns inte
view3dscene: komut yok
view3dscene: nie znaleziono polecenia
view3dscene: níor aimsíodh an t-ordú
view3dscene: no se encontró la orden
view3dscene: no s'ha trobat l'ordre
view3dscene: opdracht niet gevonden
view3dscene: parancs nem található
view3dscene: perintah tidak ditemukan
view3dscene: príkaz nenájdený
view3dscene: příkaz nenalezen
view3dscene: команда не найдена
view3dscene: командата не е открита
view3dscene: 命令找不到
view3dscene: コマンドが見つかりません