oakdecode: 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/oakdecode - from package: printer-driver-foo2zjs

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

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