indefero_update: 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/sbin/indefero_update - from package: indefero

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

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