ladvd: 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/sbin/ladvd - from package: ladvd

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

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