paver: 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 CentOS possible default full paths are:

/usr/bin/paver - from package: python-paver

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/paver - from package: python-paver

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

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