maitreya7: 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/maitreya7 - from package: maitreya

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

Error in other languages:
maitreya7: bevel nie gevind nie
maitreya7: comandă negăsită
maitreya7: comando não encontrado
maitreya7: commande introuvable
maitreya7: command not found
maitreya7: käsku ei ole
maitreya7: không tìm thấy lệnh
maitreya7: komanda nerasta
maitreya7: Kommando nicht gefunden.
maitreya7: kommandot finns inte
maitreya7: komut yok
maitreya7: nie znaleziono polecenia
maitreya7: níor aimsíodh an t-ordú
maitreya7: no se encontró la orden
maitreya7: no s'ha trobat l'ordre
maitreya7: opdracht niet gevonden
maitreya7: parancs nem található
maitreya7: perintah tidak ditemukan
maitreya7: príkaz nenájdený
maitreya7: příkaz nenalezen
maitreya7: команда не найдена
maitreya7: командата не е открита
maitreya7: 命令找不到
maitreya7: コマンドが見つかりません