cpu_offlining: 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 Debian possible default full paths are:

/usr/lib/plainbox-providers-1/checkbox/bin/cpu_offlining - from package: plainbox-provider-checkbox

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

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