ggz-config: 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 CentOS possible default full paths are:

/usr/bin/ggz-config - from package: ggz-base-libs

You may install the required package with command yum install {package}

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