oggJoin: 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/oggJoin - from package: oggvideotools

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

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