mcxdeblast: 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/mcxdeblast - from package: mcl

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

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