hwloc-calc: 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/hwloc-calc - from package: hwloc

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

On Debian possible default full paths are:

/usr/bin/hwloc-calc - from package: hwloc-nox
/usr/bin/hwloc-calc - from package: hwloc

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

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