gamatronic: 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:

/sbin/gamatronic - from package: nut

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

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