ifru: command not found

Have You tried accessing the binary with the full path?

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/ifru - from package: ipmiutil

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