httparty: 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/httparty - from package: ruby-httparty

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

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