pdv: 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/pdv - from package: alliance

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

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