gdnsd_geoip_test: 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/gdnsd_geoip_test - from package: gdnsd

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

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