osgshadercomposition: 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/osgshadercomposition - from package: openscenegraph

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

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