httest: 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/httest - from package: httest

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

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