berdecode: 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/berdecode - from package: snacc

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

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