gconfigger: 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/gconfigger - from package: gnome-libs

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

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