qemu-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/qemu-debootstrap - from package: qemu-user-static

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

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