transfermii_gui: 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/transfermii_gui - from package: transfermii-gui

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

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