debian-builder: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/debian-builder - from package: debian-builder

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