epsilon-benchmark: 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/epsilon-benchmark - from package: python-epsilon

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

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