osgearth_tfs: 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_tfs - from package: osgearth

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

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