oggDump: 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/oggDump - from package: oggvideotools

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

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