rabbit: 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/rabbit - from package: rabbit

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

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