grml-debootstrap: 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/sbin/grml-debootstrap - from package: grml-debootstrap

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

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