ripit: 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/ripit - from package: ripit

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

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