intel_stepping: 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/intel_stepping - from package: intel-gpu-tools

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

On Debian possible default full paths are:

/usr/bin/intel_stepping - from package: intel-gpu-tools

You may install the required package with command apt-get install {package}

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