gobby-0.5: 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
/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/gobby-0.5 - from package: gobby

You may install the required package with command apt-get install {package}
Error in other languages:
gobby-0.5: bevel nie gevind nie
gobby-0.5: comandă negăsită
gobby-0.5: comando não encontrado
gobby-0.5: commande introuvable
gobby-0.5: command not found
gobby-0.5: käsku ei ole
gobby-0.5: không tìm thấy lệnh
gobby-0.5: komanda nerasta
gobby-0.5: Kommando nicht gefunden.
gobby-0.5: kommandot finns inte
gobby-0.5: komut yok
gobby-0.5: nie znaleziono polecenia
gobby-0.5: níor aimsíodh an t-ordú
gobby-0.5: no se encontró la orden
gobby-0.5: no s'ha trobat l'ordre
gobby-0.5: opdracht niet gevonden
gobby-0.5: parancs nem található
gobby-0.5: perintah tidak ditemukan
gobby-0.5: príkaz nenájdený
gobby-0.5: příkaz nenalezen
gobby-0.5: команда не найдена
gobby-0.5: командата не е открита
gobby-0.5: 命令找不到
gobby-0.5: コマンドが見つかりません