sabayon: 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/sabayon - from package: sabayon
/usr/sbin/sabayon - from package: sabayon

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

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