bardecode: 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/bardecode - from package: exactimage

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

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