pipebench: 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/pipebench - from package: pipebench

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

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