xgfupdate: 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/xgfupdate - from package: xgridfit

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

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