pkg-ver-latest: 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/share/drbl/bin/pkg-ver-latest - from package: drbl

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

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