osgearth_version: 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/osgearth_version - from package: osgearth

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

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