dicelab: 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/dicelab - from package: dicelab

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

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