mkgeo_grid: 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/mkgeo_grid - from package: rheolef

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