dvblast_mmi.sh: 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/dvblast_mmi.sh - from package: dvblast

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

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