osgposter: 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/osgposter - from package: openscenegraph

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

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