osgwidgetaddremove: 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/osgwidgetaddremove - from package: openscenegraph

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

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