go_grid.rb: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/fog/bin/go_grid.rb - from package: ruby-fog

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