starpu_machine_display: 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/bin/starpu_machine_display - from package: starpu-tools

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

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