numactl: 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/numactl - from package: numactl

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

On Debian possible default full paths are:

/usr/bin/numactl - from package: numactl

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

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