get-port-link-2-drbl-srv: 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/get-port-link-2-drbl-srv - from package: drbl

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

Error in other languages:
get-port-link-2-drbl-srv: bevel nie gevind nie
get-port-link-2-drbl-srv: comandă negăsită
get-port-link-2-drbl-srv: comando não encontrado
get-port-link-2-drbl-srv: commande introuvable
get-port-link-2-drbl-srv: command not found
get-port-link-2-drbl-srv: käsku ei ole
get-port-link-2-drbl-srv: không tìm thấy lệnh
get-port-link-2-drbl-srv: komanda nerasta
get-port-link-2-drbl-srv: Kommando nicht gefunden.
get-port-link-2-drbl-srv: kommandot finns inte
get-port-link-2-drbl-srv: komut yok
get-port-link-2-drbl-srv: nie znaleziono polecenia
get-port-link-2-drbl-srv: níor aimsíodh an t-ordú
get-port-link-2-drbl-srv: no se encontró la orden
get-port-link-2-drbl-srv: no s'ha trobat l'ordre
get-port-link-2-drbl-srv: opdracht niet gevonden
get-port-link-2-drbl-srv: parancs nem található
get-port-link-2-drbl-srv: perintah tidak ditemukan
get-port-link-2-drbl-srv: príkaz nenájdený
get-port-link-2-drbl-srv: příkaz nenalezen
get-port-link-2-drbl-srv: команда не найдена
get-port-link-2-drbl-srv: командата не е открита
get-port-link-2-drbl-srv: 命令找不到
get-port-link-2-drbl-srv: コマンドが見つかりません