osgintersection: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/osgintersection - from package: openscenegraph

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