numastat: 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/numastat - from package: numactl

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

On Debian possible default full paths are:

/usr/bin/numastat - from package: numactl

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

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