buildd: 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/buildd - from package: buildd

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

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