cvs-buildpackage: 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/cvs-buildpackage - from package: cvs-buildpackage

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

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