miraconvert: 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/miraconvert - from package: mira-assembler

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

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