grape: 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/share/groovy2/bin/grape - from package: groovy2
/usr/share/groovy/bin/grape - from package: groovy

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

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