cvs2bzr: 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/cvs2bzr - from package: cvs2svn

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

Error in other languages:
cvs2bzr: bevel nie gevind nie
cvs2bzr: comandă negăsită
cvs2bzr: comando não encontrado
cvs2bzr: commande introuvable
cvs2bzr: command not found
cvs2bzr: käsku ei ole
cvs2bzr: không tìm thấy lệnh
cvs2bzr: komanda nerasta
cvs2bzr: Kommando nicht gefunden.
cvs2bzr: kommandot finns inte
cvs2bzr: komut yok
cvs2bzr: nie znaleziono polecenia
cvs2bzr: níor aimsíodh an t-ordú
cvs2bzr: no se encontró la orden
cvs2bzr: no s'ha trobat l'ordre
cvs2bzr: opdracht niet gevonden
cvs2bzr: parancs nem található
cvs2bzr: perintah tidak ditemukan
cvs2bzr: príkaz nenájdený
cvs2bzr: příkaz nenalezen
cvs2bzr: команда не найдена
cvs2bzr: командата не е открита
cvs2bzr: 命令找不到
cvs2bzr: コマンドが見つかりません