mirage: 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/mirage - from package: mirage

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

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