runner.rb: 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/lib/ruby/vendor_ruby/ramaze/bin/runner.rb - from package: ruby-ramaze

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

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