deb3: 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/deb3 - from package: quilt

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

Error in other languages:
deb3: bevel nie gevind nie
deb3: comandă negăsită
deb3: comando não encontrado
deb3: commande introuvable
deb3: command not found
deb3: käsku ei ole
deb3: không tìm thấy lệnh
deb3: komanda nerasta
deb3: Kommando nicht gefunden.
deb3: kommandot finns inte
deb3: komut yok
deb3: nie znaleziono polecenia
deb3: níor aimsíodh an t-ordú
deb3: no se encontró la orden
deb3: no s'ha trobat l'ordre
deb3: opdracht niet gevonden
deb3: parancs nem található
deb3: perintah tidak ditemukan
deb3: príkaz nenájdený
deb3: příkaz nenalezen
deb3: команда не найдена
deb3: командата не е открита
deb3: 命令找不到
deb3: コマンドが見つかりません